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How is Familial Mediterranean Fever diagnosed?

See how Familial Mediterranean Fever is diagnosed. Which specialists are essential to meet, what tests are needed and other useful information for the diagnosis of Familial Mediterranean Fever

Familial Mediterranean Fever diagnosis

How is Familial Mediterranean Fever diagnosed?


Familial Mediterranean Fever (FMF) is a hereditary autoinflammatory disorder characterized by recurrent episodes of fever and inflammation. Diagnosing FMF can be challenging as its symptoms can mimic other conditions. However, there are several key diagnostic methods that healthcare professionals utilize to identify FMF in patients.



Medical History and Physical Examination


During the diagnostic process, the healthcare provider will begin by taking a detailed medical history of the patient. They will inquire about the patient's symptoms, their frequency, duration, and any associated factors. Additionally, they will ask about the patient's family history, as FMF is an inherited disorder.


Following the medical history, a thorough physical examination will be conducted. The healthcare provider will assess the patient for signs of inflammation, such as joint swelling, redness, or tenderness. They will also look for other characteristic symptoms of FMF, including abdominal pain, chest pain, and skin rashes.



Genetic Testing


Genetic testing plays a crucial role in diagnosing FMF. It involves analyzing the patient's DNA to identify mutations in the MEFV gene, which is responsible for producing a protein called pyrin. Mutations in the MEFV gene are associated with FMF.


The most common mutations in the MEFV gene include M694V, V726A, M680I, and E148Q. However, it is important to note that not all individuals with FMF will have identifiable mutations, and some individuals with these mutations may not develop FMF symptoms.



Diagnostic Criteria


There are established diagnostic criteria that aid in the diagnosis of FMF. The most widely used criteria are the Tel-Hashomer criteria, which include clinical and genetic components.


Clinical criteria: These criteria consider the presence of specific symptoms, such as recurrent fever episodes lasting 1-3 days, abdominal pain, chest pain, and joint inflammation. The frequency and duration of these symptoms are taken into account.


Genetic criteria: These criteria involve identifying mutations in the MEFV gene through genetic testing. The presence of specific mutations, as mentioned earlier, contributes to the diagnosis.


Meeting both clinical and genetic criteria is highly indicative of FMF, but in some cases, individuals may only meet the clinical criteria due to the absence of identifiable mutations.



Response to Colchicine Treatment


Colchicine is the mainstay treatment for FMF. It is highly effective in preventing and reducing the frequency of FMF attacks. Therefore, a positive response to colchicine treatment can be considered a diagnostic tool.


If a patient exhibits a significant reduction in the frequency and severity of FMF symptoms after starting colchicine, it strongly supports the diagnosis of FMF. However, it is important to note that not all patients respond equally to colchicine, and some may require higher doses or additional medications.



Exclusion of Other Conditions


Since FMF symptoms can overlap with other diseases, it is crucial to exclude other potential causes of the patient's symptoms. The healthcare provider may order additional tests to rule out conditions such as infections, autoimmune disorders, and other autoinflammatory diseases.



Consultation with a Specialist


In complex cases or when the diagnosis remains uncertain, the healthcare provider may refer the patient to a specialist, such as a rheumatologist or geneticist, who has expertise in diagnosing and managing FMF. These specialists can provide further evaluation, interpretation of genetic test results, and additional guidance.



In conclusion, diagnosing Familial Mediterranean Fever involves a combination of medical history, physical examination, genetic testing, adherence to diagnostic criteria, response to colchicine treatment, exclusion of other conditions, and sometimes consultation with a specialist. Accurate diagnosis is crucial for appropriate management and treatment of FMF.


Diseasemaps
2 answers
Genetic testing or good outcome from colchicine treatment

Posted Mar 5, 2017 by Karen 1050

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FMF  Here are my 5 fmf hetro markers:    Exon 3 R314R (p.Arg314Arg) c.942C>T   France/Jewish Non Ashkenasi  Exon 5  E474E (p.Glu474Glu) c.1422G>A  France/Jewish Non Ashkenasi   Exon 5 Q476Q (p.Gln476Gln) c.1428A>G  Unknown/Unknown  Exo...
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