familial Mediterranean fever: a plain-language guide built from published research

Please read this first. This guide is a companion to your medical team, not a replacement, and it is not medical advice. Everything here is tied to published research. If something you expected is not here, it almost always means we have not mapped a source for it yet, not that it is unknown to medicine. familial Mediterranean fever is an early, growing map, so it will look incomplete on purpose: we would rather show less and have every line be something you can check than fill the page with claims we cannot stand behind. For anything about your own situation, your clinicians hold the full picture. How this guide is built and why.

What it is

Familial Mediterranean fever (FMF) is the most common inherited autoinflammatory disease. Caused by mutations in the MEFV gene (which encodes the protein pyrin) and inherited in an autosomal recessive pattern, it causes recurrent, self-limited attacks of fever and inflammation of the membranes lining the abdomen, chest, and joints. It is most common in populations around the Mediterranean.

Signs and symptoms

Fever

Recurrent, self-limited fever is the hallmark of FMF, present in the large majority of patients during attacks.

Limited evidenceSource: ORPHA:342

Evidence ratingweak

Study designontology_import

Confidence (0-1)0.7

Replicationunreplicated

Supporting sourcesPMID:42114813

Notesplain_language confirmed from PMID:42114813 via curation 2026-06-12.

Last reviewed2026-06-12

Elevated erythrocyte sedimentation rate

During and between attacks, blood markers of inflammation such as the ESR and serum amyloid A are often raised, and tracking them helps gauge disease activity.

Limited evidenceSource: ORPHA:342

Evidence ratingweak

Study designontology_import

Confidence (0-1)0.7

Replicationunreplicated

Supporting sourcesPMID:42095987

Notesplain_language confirmed from PMID:42095987 via curation 2026-06-12.

Last reviewed2026-06-12

Erysipelas

An erysipelas-like erythema, a red, raised, tender patch usually on the lower leg or foot, is a skin sign fairly specific to FMF.

Limited evidenceSource: ORPHA:342

Evidence ratingweak

Study designontology_import

Confidence (0-1)0.7

Replicationunreplicated

Supporting sourcesPMID:42050020

Notesplain_language confirmed from PMID:42050020 via curation 2026-06-12.

Last reviewed2026-06-12

Pleuritis

Inflammation of the lining around the lungs (pleuritis) can produce one-sided chest pain during some FMF attacks.

Limited evidenceSource: ORPHA:342

Evidence ratingweak

Study designontology_import

Confidence (0-1)0.7

Replicationunreplicated

Supporting sourcesPMID:42114813

Notesplain_language confirmed from PMID:42114813 via curation 2026-06-12.

Last reviewed2026-06-12

Peritonitis

Inflammation of the lining of the abdomen (peritonitis) can produce sudden, severe abdominal pain, among the most common attack types in FMF.

Limited evidenceSource: ORPHA:342

Evidence ratingweak

Study designontology_import

Confidence (0-1)0.7

Replicationunreplicated

Supporting sourcesPMID:42114813

Notesplain_language confirmed from PMID:42114813 via curation 2026-06-12.

Last reviewed2026-06-12

Arthritis

Joint inflammation (arthritis), most often a single large joint, can occur during FMF attacks, alongside joint aches (arthralgia).

Limited evidenceSource: ORPHA:342

Evidence ratingweak

Study designontology_import

Confidence (0-1)0.7

Replicationunreplicated

Supporting sourcesPMID:42050020

Notesplain_language confirmed from PMID:42050020 via curation 2026-06-12.

Last reviewed2026-06-12

Treatment and management

What the research describes, not a recommendation. Treatment decisions belong with your clinician.

This covers treatments that appear in the published research mapped here. Investigational and experimental therapies are not included, so their absence is a boundary of this map, not a sign they do not exist.

Colchicine

Colchicine taken daily is the cornerstone of FMF treatment. It prevents the inflammatory attacks in most patients and, importantly, protects against the long-term complication of amyloidosis.

Used to help with: Familial Mediterranean fever.

Limited evidenceSource: PMID:42114813

The source text this rests on

“Colchicine is an essential component of familial Mediterranean fever (FMF) treatment.”

An excerpt quoted verbatim from the source named above, shown as recorded. The full sentence is in the linked source.

Evidence ratingweak

Confidence (0-1)0.7

Replicationunreplicated

Notesconfirmed from PMID:42114813 via curation 2026-06-12

Last reviewed2026-06-12

Turn this into questions for your doctor

The hardest part is often knowing what to ask. PatientLead Health helps families turn what is on this page into the right questions for their care team.

Prepare for your appointment with PatientLead Health →

How to read the evidence labels

Widely acceptedSpecialists broadly agree on this.

Strong evidenceBacked by solid, repeated research.

Moderate evidenceReasonable evidence, still being confirmed.

Limited evidenceSome evidence, but not yet convincing.

Early evidenceAn early finding that needs more study.

Experts disagreeResearchers actively disagree about this.

Where this comes from

This guide is built from 2 published source(s). Every claim above links back to one of them. Click any source ID to read the original on PubMed.

ORPHA:342 · Orphanet/HPO annotations for Familial Mediterranean fever

PMID:42114813 · The effect of colchicine on micronutrients in children with newly diagnosed familial Mediterranean fever.