補足資料-5 スウェーデン保健庁の電磁波過敏症に関するガイドライン


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記:2013312
http://www.socialstyrelsen.se/sosfs/1991-6/andringdforeskrift1998-3にあった内容
2013
3月のログ

スウェーデン保健庁のサイトにあった勧告。
この勧告は本文にも明記されているがスウェーデンの電磁波過敏症などの研究者であるカロリンスカ研究所Olle Johanssonも、スウェーデンの電磁波過敏症に関する市民団体であるthe Association for Electrical and Display Damaged (FEB)も参加して、作成されていることは注目に値する。

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Constitutional Amendment(法改正) SOSFS 1998:3
National Board guidelines on treatment of patients relate their problems to amalgam and electricity
   Recommendation
アマルガムと電磁波の問題に関する患者の取り扱いに関するスウェーデン保健庁ガイドライン (勧告)

This is a change in the Constitution of the internet version. It is also available in print. It is the printed publication to.
To see the entire revised constitution with all amendments introduced, go to the "View basic constitution and amendment provisions" (below) and the "Latest version" of the page that follows.

Introduction
Patients put their complaints in connection with amalgam fillings or electromagnetic fields often feel that they get a bad attitude in health care. They do not think they will be taken seriously, they do not feel respected and understands that many in health care believe that their symptoms are imaginary or purely psychological in origin. A problem in the investigation of these patients is that there is no scientific evidence proving one correlation between overall disease symptoms and amalgam fillings and electricity. On the other hand, a connection can not be excluded for some patients. However, there are no clinically evaluated sample can specify which of these patients would then be. Welfare has the expert reports stated that the patients need to be carefully investigated, and otherwise make a careful handling. In 2 a § Health Act (1982:763) states that care should be based on respect for patient autonomy and integrity and as far as possible be designed and implemented in consultation with the patient. With regard to the complaints made by patients and patient associations, the Board considered it indicate certainty that, as a support for health care, the general guidelines elaborate on how to respond to and investigate these concerned patients. In working with the general guidelines have participated a working and a reference. In both groups, the Medical Officer of Health Per Swartling been president and agency director Eva Thoor secretary, both active in the National Board of Health and the medical team. The working group has concluded the following members: Sven-Olof Andersson, MD, Mariehems clinic, Umeå, Bridget Evengård, MD, Infectious Diseases , Huddinge Hospital, Lena Hillert, Senior Assistant, Centre for environmental impact, Community Medicine South, Huddinge, Olle Johansson, Associate Professor, Department of Experimental Dermatology, Department of Neuroscience, Karolinska Institute, Sven Langworth, MD, Occupational Medicine Department, Huddinge Hospital, 'Magnus Svartengren , Associate Professor and MD, Occupational Medicine Division, Department of Public Health Sciences, Karolinska Hospital The reference has concluded the following members: Einar Berg, International Academy of Oral Medicine and Toxicology, Sweden (IAOMT-Sweden) Birgitta Berglund, National Society for ME patients Agneta Ekman Swedish Dental Association Sten-Olof Grönqvist, Dental Injury Association Jan Håkansson, Riksförsäkringsverket Margareta Karlsson, the Swedish Rheumatism Association January Kullberg, the Association for Electrical and Display Damaged (FEB) Ingvar Noren, Swedish Medical Association

Background
Purpose

The general guidelines have been developed to provide guidance to health workers in contact with patients relating their problems to amalgam fillings or electricity. Some patients have a definite opinion that the tooth replacement materials, mainly amalgam, and electricity is the cause of their symptoms and wish physician involvement to amalgam or elsanering. Here is a conflict, then the doctor has no scientific basis to meet the patient's wishes. These include of these difficulties in patient-physician relationship as the general advice is. The general advice is aimed primarily at physicians, especially in primary care. Even dentists are concerned with regard to problems related to amalgam fillings. They shall, however, refer to a doctor for assessment of general symptoms of the patient. Finally, the general advice interest for current patients and their compounds, Dental Injury Association and the Association of Electricity and Screen Damaged. The guidelines contain no new review of the scientific literature dealing with the effect on health of amalgam and electricity.

Knowledge State
National Board in November 1994 issued expert reports "Making You Sick of amalgam?" (SoS report 1994:21) and in January 1995, "Electromagnetic fields and health effects" (SoS report 1995:1). Both reports concluded that it was impossible to scientifically either confirm or reject a causal link between dental amalgam and electricity and the problems or illnesses experienced by patients. The exception was contact allergic changes in the oral mucosa of amalgam. Welfare has after expert reports were released continuously monitored the scientific literature on the health effects of dental amalgam and electricity. government has found it to indicate certainty that a deeper understanding is reached on the possible health effects of mercury from amalgam has. Against this background, the Government in spring 1997 to Forskningsrådsnämnden to carry out activities in order to create overview and in-depth knowledge in the field. Reporting to the Government shall take place on 1 February 1998. , in June 1997, a report from a working group of the European Commission with recommendations to the Commission regarding dental amalgam. The report shows that there is not shown any link between mercury from amalgam fillings and general toxic effects in the body. According to the report, there is no reason to remove functioning amalgam fillings except in cases with proven allergy to mercury. It is also recommended that all filling materials should be evaluated to the same extent. The report has not yet been accepted by the European Commission. Council for Work Life Research in 1997 on behalf of the government put together a research and evaluation of both Swedish and international research on health effects of electromagnetic fields.

The authorities' precautionary principle
Despite the uncertain state of scientific knowledge regarding possible connections between elpåverkan and various diseases or appeal, a number of agencies expressed a common assessment of the publication "The authorities' precautionary principle of low frequency electric and magnetic fields, a guide for policy makers" (1996). Relevant authorities are the National Board, the National Electrical Safety Board, the National Board and Institute of Radiation Protection. The assessment states that there are reasons for some caution in terms of exposure to low frequency electric and magnetic fields. Authorities recommend that one should strive for a reduced exposure using measures that can be taken at reasonable cost. The assessment is not specifically about people who put their complaints in connection with electricity.

General recommendations on the use of amalgam
Welfare recommends as in previous general counsel to mercury and its compounds should be handled so that both individual exposure and contamination of the surrounding environment minimizes the level. Although there is no evidence amalgamfyllningars harmfulness, the use of amalgam gradually decrease with regard to the general environmental aspects. Previous recommendations to avoid amalgam work on pregnant women still apply.

Scientifically proven
When a causal relationship on a particular issue can not be shown scientifically, it means obviously not to any suspicion of such a connection can be excluded. It is important to always be open to new knowledge. It is, however, considerable demands on the studies presented to a causal relationship to be considered proven in a scientific manner. It is not enough that a number of patients were reported to have been improved after amalgam or elsanering. The selection of patients must be properly and treated group must be compared with a control group. The number of patients must be large enough to exclude random variation. Regarding treatment effects of amalgam, respectively elsanering positive results reported in some studies, while other studies have not confirmed this. Some scientifically clear conclusions have not yet been established.

CREDIBILITY GAP
A credibility gap has emerged between the patients and the health service. Many patients who have a belief about the cause of their problems have been experienced that the doctor has taken a totally dismissive attitude to the patient's own interpretation of the background to the symptoms and sometimes even experienced physician questioned symptoms. Patients with amalgam and electricity-related disorders often feel not captured on seriously. Symptoms can also create fear of the unknown, it is difficult to explain. Patients report that many physicians and dentists consider them sick imagination, referring to the National Board reports that no connection is shown. By repeating statements from these patients shows that they experienced themselves casually treated. They have often chosen to seek out health care providers who have themselves been convinced of a connection and helped amalgam or elsanering. , it gives cause for reflection when groups of patients in severe criticism of the care and the National Board of Health, which is perceived to give a false picture of scientific certainty. It is incumbent upon all of the licensed health care professionals to act on science and proven experience. As in many reports of individual cases reported favorable results of amalgam, respectively elsanering regarding patients' symptoms, it was indicate the location of the National Board, with the help of expert groups examine the causal relationship has been demonstrated in controlled trials. Such a relationship could not be demonstrated. Patients have sometimes felt that they were not considered to be ill and therefore would not be healthy or simulated. This mistaken view has obviously offended and upset many patients. In both expert reports highlight that patients' symptoms are real and that patients naturally be shown respect. The multifaceted problems requires a careful and comprehensive investigation so that the diseases and conditions that may contribute to the symptoms are recognized and treated.

Responding
Consultations
 
When a doctor is consulted by a patient to relate their problems to amalgam or electricity, he is often faced with a difficult task. Some physicians perceived(と判る) as nonchalant(むとんちゃく・無関心な) or dismissive(拒否するような) may have been frustrated for patients with conditions that they could not meet. They have not succeeded in creating a good relationship with patients. Doctors should not lock itself when the patient or her own opinion about the cause of the symptoms, but have a responsibility to the patient is comprehensively investigated. At the same time, the physician must respect the patient's own opinion. How the doctor succeed in this balance determines probably the continued contact can be trustful. Patients should be convinced that the doctor has the same objective as the patient, namely to relieve the patient from discomfort, regardless of what they are caused by. If patients find that the doctor involved and is eager to help his patient, are certainly far better opportunities to discuss various alternative approaches, regardless of the cause of the symptoms. Each patient needs to physician listens and takes the patient's symptoms seriously, symptoms that the patient would be confirmed and understood. GPs are generally best suited for the investigation of patients with amalgam or electricity-related disorders. They have a broad training and experience in investigating patients with diffuse and general symptoms. The general practitioner is also able to utilize other personnel such as a nurse, physiotherapist, occupational therapist, social worker and psychologist.

Symptoms
In reports on groups of patients with amalgam-and electricity-related disorders reported a variety of symptoms. No symptoms are specific to a particular disease, but occurs in a variety of diseases and functional disorders. Certain general symptoms occur frequently in both groups of patients. There are fatigue, weakness, achiness in the body, difficulty concentrating, loss of memory, dizziness and headache. These symptoms are common even in the general population.

Patient Contact
Good knowledge and good contact with the patient is a prerequisite for the doctor to discuss it, for most people familiar interplay between physical and mental problems. A bodily disease can cause such anxiety and depression. Conversely, stress and anxiety(不安) give bodily pains such as palpitations, headache, diarrhea and fatigue. It is not uncommon for patients with serious physical illnesses while having symptoms of a psychological nature which ignored can complicate treatment and worsen prognosis. Though the social situation affects disease progression and symptoms. It is therefore important to have illuminated relationships in family and work, past traumatic life events etc.. If the trusting plug missing, there are usually not placed to address these important issues. Questions of this kind can be of some patients perceived as irrelevant, unnecessary, disruptive and insulting. They must be made with great feeling and sensitivity to the patient's reactions. All questions are suitable not to discuss at the first contact. , it is important to explain to the patient the importance of being able to see the patient's entire life in order to understand the role that disease plays. That said, the social and professional situation would explain the patient's symptoms. The disease can often affect the social situation, which in turn may exacerbate disease symptoms. The doctor can help the patient to reflect on this and get a starting point for further discussion on what patients can do to improve their health. In the following sections, proposals for investigation and treatment of patients with amalgam-and electricity-related disorders. These patient groups have much in common with other patients with diffuse and obscure problems, where it can take a very long time, sometimes several years before symptoms get an explanation of diagnosis. This applies, for example, fibromyalgia and chronic fatigue syndrome. The difference may be that these patients do not have their own definite opinion about the cause. The common denominator is that they often feel badly treated in health care, feel that they are not taken seriously, but is treated casually. They are disappointed not to be believed and confirmed by the doctor. As a patient, it is often an expectation to be healed. This places great demands on the physician to create a relationship of trust with patients relate their problems to amalgam or electricity, which may also be disappointed by previous contacts with health care. Not least, it is important to give the patient enough time, especially the first few times, then confidence will be built up. Doctor listening skills put to the test. Time also needs to be devoted to the preparation of the meeting with the patient, to sit in and evaluate past records of investigations, opinions etc.. Doctor's attention, then during the actual visit more undivided and actively devoted to contact with the patient. The doctor also avoid unnecessarily duplicating previous studies and treatment trials. Physician's attitude and approach to the patient's problems are of great importance to the environment, such as Insurance, Employment and relatives, perceived patient suffering. If the doctor shows that he respects the patient's symptoms as real, reduces the risk that the patient is subjected to slurs and treatment.

Sick

Existing knowledge does not provide medical scientific data to describe the patient's symptoms as amalgam or electricity-related. Nor is there any evidence that a relationship can be excluded. When sick, the doctor should be clearly describe the symptoms that constitute obstacle to working as well as present the study findings presented. It is also of value to the patient's own views recorded. Physician contact with insurance is important to clarify the medical assessment of the patient's employment barriers and the measures that can be medically justified for the rehabilitation of the patient.


Amalgam and elsanering
Today is no scientific basis for actively recommending amalgam removal sickness symptoms other than the allergic reactions. Scientific support is also lacking for elsanering. If thorough investigation can not give any certain explanation to the patient's symptoms, and treatment efforts have not been successful, you should be able to understand and accept the patient wants to try other ways, such as amalgam or elsanering.

Continued contact
It is important that the physician provides continuing contact with the patient, even when treatment options seemingly exhausted. If the bot does not exist, the physician's role is to alleviate symptoms and support the patient. Further information is valuable and even talk with the patient about what he or she can do to strengthen their healthy sides and maintain their self-esteem, regardless of the cause of the symptoms. It can be anything from getting enough sleep, exercise or relaxation to avoid overtime or other commitments. This may seem obvious observations, but is often not taken into account. In the continued contact, the physician must also consider the renewal of history, assess changes in patient condition and reconsider the diagnosis.

Continuity
High continuity of medical contact should be sought. This provides better conditions for the trusting patient-physician relationship, which is so crucial. In difficult cases, it is important that the patient may be referred for professional and / or environmental health or other specialty. The patient's regular doctor - usually a general practitioner - should reconnect and responsibility for specialist assessment. If confidence ceases between the patient and the doctor, he should help the patient to get a new permanent physician. The same applies to dentists.

Investigation and treatment of patients with symptoms related to amalgam

The section on treatment containing the advice of a more general nature. The following practical advice in terms of contact with patients relating their problems to amalgam.

Listen, respect
A fundamental prerequisite for being able to help these patients, the doctor can listen, take the patient seriously and confidence. The patient must be given time to describe its various symptoms and also feel that the doctor respects the patient's own perception of the cause of the symptoms. Physicians must understand that the patient may feel concern for severe underlying disease or have concerns about the unknown or difficult to explain. , it is important that the patient be informed of his right to have a comprehensive investigation and assessment so that significant diseases are not overlooked. The patient must feel that the physician believes that the patient's complaints and symptoms are real even if a certain explanation for the disorder can not be given.

Troublesome Picture
Most patients report a variety of general symptoms but also local trouble from the mouth, teeth or chewing apparatus. The patient need not relate any problems to amalgam. most common problems for which patients are looking for are as follows: General weakness and severe fatigue Diffuse pain Pain or stiffness in muscles or joints Dizziness Headaches Difficulty concentrating and poor memory scurrying or sore teeth Metallic taste Dry mouth sores or blisters in mouth soreness and bleeding from the gums pain and suffering in the face and jaw

Draft report
Current problems

Each symptom is described thoroughly with onset and progression. Ongoing medication is noted as the patient's own measures to relieve discomfort and possible effects of these.
Past medical history , both medical and dental health history demand with inventory of past serious illnesses and injuries, possible hospitalization, investigations and treatments. Medication including the use of herbal penetrated. Suspected or confirmed hypersensitivity / allergy to medicines or other substances noted.

Social situation
It is important to gain an understanding of the social situation and the stress factors that can affect the course of disease, such as duplication of work, overtime, unemployment and tobaks-/alkoholbruk.

Physical examination
Carefully somatic status are always including the mouth and teeth.

Laboratory Tests
The following tests may be considered in the basal study: blood count, SR Serum Iron B12/folsyra electrolytes including calcium serum creatinine Liver Samples S-glucose Thyreoideaprover Urine status may be additional samples after clinical suspicion, eg Lyme disease or virusserologi. Determination of mercury in blood or urine does not make sense to perform routine and therefore not recommended. Patients with amalgam-related complaints have not been shown to have elevated levels of mercury and analysis therefore provides no guidance in this regard. Elevated levels of mercury can be found in people who have occupational exposure. Furthermore, teeth grinding and intense gum chewing, including nicotine gum, give elevated values. In these cases, the analysis may be warranted. For advice on sampling and interpretation of results in these cases, contact with professional and / or environmental medical unit.

Differential Diagnoses
Diagnoses to consider depending on the clinical picture include follows: Neurological Disease infection collagenosis Malignancy Malabsorption endocrine or metabolic disorder mental disorder such as depression, anxiety, etc. Somatoformt syndrome

Dental assessment
Dental assessment is always included in the investigation. There are no current assessment, referral should be made to the patient's regular dentist. A referral to a dentist may be issues relating to such

·         patient's previous dental health history including actions

·         current status of the tooth and filling material, mucous,

·         bites and chewing function, and

·         dental assessment and treatment plan.

In consultation with the dentist can be referred to a dermatologist be considered for any allergy testing in lichen or other change in the oral mucosa.

Revisit
It is important that the patient will follow-up visit to the doctor to get information about different findings. While normal findings are valuable to discuss. It can dispel concerns about serious illness.

Treatment
Detected deficiencies and diseases are treated conventionally by doctors and dentists. Other symptoms and signs may be relieved with symptomatic treatment and continued support.

When specific disease can not be detected
Experience shows that the investigation in some cases can result in that no specific disease could be detected. The patient's perception of symptoms caused by amalgam may remain and the patient may be anxious amalgam removal. Doctor's task will then be to provide information on what is currently known as science and proven experience. This is described in more detail in the introductory section.

Amalgam removal
In allergic changes in the oral mucosa including lichen or other demonstrated hypersensitivity to mercury is indication of amalgam removal. Investigation done by dermatologist issuing the medical certificate of fitness to perform amalgam removal. general symptoms At present there is no medically justified indications for amalgam removal. Some patients report that they have been symptom-free or improved after amalgam removal. Other patients have not experienced any improvement and some have new problems. Patients should receive detailed information from both physicians and dentists above. If the patient still wishes to undergo amalgam removal, the patient should be respected for that decision. Physicians should in these cases, a certificate that the patient is fully treated and medical obstacles Ör amalgam removal exists or not. costs amalgam removal is governed by dental insurance.

Investigation and treatment of patients with symptoms related to electricity
Patients called and call themselves and their condition in different ways. It's still about the same thing or relationship, namely the various problems that are perceived to be related to electricity and electrical appliances.

Terminology
The area described here as elkänslighet has had a partly confusing terminology. Symptoms are sometimes equated with those seen in allergies and intolerance. It is therefore certainty as far as possible, use a terminology consistent with that used in adjacent areas. Hypersensitivity is a generic term which means that it reacts with symptoms upon contact with common substances under conditions that people in general can withstand without trouble . The reaction can be caused by specific immunological mechanisms (allergy), non-immunological mechanisms (unspecific hypersensitivity, hyperreactivity) and specific chemical hypersensitivity. use of the terms allergy and hypersensitivity thus requires tests available to identify these conditions. For symptoms reported triggered by electromagnetic fields are missing today proven testing method. Nor is there any evidence that elkänslighet caused by specific immunological mechanisms, which is why the terms allergy to electricity and electromagnetic hypersensitivity should be avoided. To avoid a questionable use of the above defined terms can name elkänslighet used in health care. Elkänslighet term then used to describe individuals and groups who put their complaints in connection with electrical equipment without opinion on causation. section on treatment containing the advice of a more general nature. The following practical advice with regard to contact with elkänsliga patients.

Listen, respect
A fundamental prerequisite for being able to help these patients, the doctor can listen, take the patient seriously and confidence. The patient must be given time to describe its various symptoms and also feel that the doctor respects the patient's own perception of the cause of the symptoms. Physicians must understand that the patient can feel the anxiety of the unknown and difficult to explain. , it is important that the patient be informed of his right to have a comprehensive investigation and assessment so that significant diseases can not be overlooked. The patient must also know that the physician believes that the patient's complaints and symptoms are real and not imagined even if a certain explanation for the disorder can not be given. elkänsliga Some patients find it difficult to seek medical attention for fear of getting sick of elpåverkan of reception. As far as practicable should therefore ask for and respond to the patient any desire to turn the computer on and off fluorescent lamps, etc.. Examination with electrical apparatus, such as ECG, should not be performed routinely but only when medically justified question, and in consultation with the patient.

Troublesome Picture
The elkänsliga represent a very heterogeneous group, both in terms of description of the problems and situations that trigger symptoms. Two main groups can be distinguished. The largest group has been troublesome from the skin during VDU work. Patients describe the redness, heat, and sometimes burning pain in the skin, especially the face. Tingling and numbness occurs. Symptoms often resolve within a few years and relatively good prognosis for this group. A smaller group has general elkänslighet and except for any skin symptoms also general problems with fatigue, concentration and memory problems, headaches, dizziness, palpitations and sometimes pain. Less common symptoms include cover for the ears, respiratory problems, localized joint pain and gastrointestinal problems. Following VDU's close proximity to the fluorescent lights commonly reported symptoms triggering situation. Other sources of complaints reported to be television, electrical appliances, telephones, cars, trains and even sunlight. Measurements of low-frequency electric and magnetic fields has not been possible to predict where problems are most pronounced. The electromagnetic spectrum can be measured and characterized in a very large number of different ways. Today, however, lacking knowledge of the properties of electric and / or magnetic fields that may involve risks and how the doses and exposure should be valued. Further research is needed before measurements can be meaningful for the assessment of individual cases. elkänsliga Some patients tell of unbearable symptoms such as spikes of severe pain - if they do not avoid electrical equipment and installation. It will be particularly difficult cases, looking to elfri environment in caravans or cottages. Symptoms often interpreted as a warning of the victims as many feel that the symptoms gradually worsened by repeated complaints triggering situations.

Draft report
Knowledge of elkänslighet is now complete. Therefore hair investigation focused on differential diagnosis, ie. trying to identify other possible causes of symptoms picture, both individual and environmental.

Current problems
Each symptom is described thoroughly with onset and progression. The patient's experience of triggering or adverse factors and the measures taken by the patient himself and the effects of these noted.

Past medical history
Medical medical history sought in the usual way with the stock of past severe symptoms of illness and injuries, any previous hospitalization, investigations and treatments. Current medication and any hypersensitivity to drugs, also including herbal remedies, or allergy noted.

Social situation
Mapping of both occupational history, working, working as family situation is essential. Physical and psychosocial conditions, leisure, stress such as duplication, overtime or unemployment, relationship disturbances at home and at work, tobacco / alcohol use, etc. may be of importance.

Physical examination
Carefully somatic status is always carried out.

Laboratory Tests
The following tests may be considered in the basal study: blood count, SR Serum Iron B12/folsyra Electrolytes with calcium serum creatinine Liver Samples S-glucose Thyreoideaprover Urine status may be additional samples of clinical suspicion, eg Lyme disease or virusserologi.

Differential Diagnoses
The following diagnoses may be considered depending on the symptoms: Skin diseases like eczema, rosacea and other exanthem Allergies, asthma, bronchial hyperresponsiveness Anemia Malabsorption Endocrine or metabolic disease Neurological Disease Infection collagenosis Malignancy Psychiatric disorders such as depression, anxiety, etc. Somatoformt syndrome Other environmental problems pictures

Occupational
Early contact is taken with care, if any, for the analysis of safety-related measures. When occupational missing may be addressed to professional and / or environmental health unit for advice. All measures should always be done in close consultation with the patient in accordance with the health care law.

Revisit
It is important that the patient will follow-up visit to the doctor to get information about different findings. While normal findings are valuable to discuss. It can dispel concerns about serious illness.

Treatment
Detected deficiencies and diseases are treated conventionally. Other symptoms and signs may be relieved with symptomatic treatment and continued support. If the patient does not feel able to withstand some electrical equipment or some environments, this is something that must be taken into account as far as possible. When sickness arises, it is certainty to have contact with care, when available. Other tasks or shorter sessions may be sufficient to appeal shall pass.

When specific disease can not be detected
In many cases, the investigation no evidence of specific disease. In addition to skin lesions, it is rare for clinical examination and laboratory tests shows no pathological abnormalities. The patient's perception of symptoms caused by electricity may remain and the patient may be anxious elsanering. Doctor's task will then be to provide information on what is currently known as science and proven experience.

Elsanering
It is not the job of the physician to recommend about elsanering should be done. The scientific evidence is mentioned uncertain. These issues must be dealt with by responsible employers and municipalities, which in some cases have been awarded grants for home modifications. At rehabilitation work, replacement of equipment, such as fluorescent to incandescent lamps, cathode-ray screen to screen liquid crystal, called LCD, included when the effects of different response. Some elsanering are sometimes included as part of the measures. Pros and cons of planned interventions should be carefully considered in each case, as well as how a failure to improve will be handled. This guidance replaces s 1 through 4 of the National Board of Health guidelines (SOSFS 1991:6) concerning the investigation of patients who put their symptoms associated with mercury from amalgam. The section General recommendations on the use of amalgam on page 5 is still correct.