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Familial Mediterranean fever in children: the expanded clinical profile
H A Majeed1, M Rawashdeh, H el-Shanti
1Department of Pediatrics, Faculty of Medicine, University of Jordan, Amman, Jordan. pal@go.com.jo
Abstract:
The clinical picture of familial Mediterranean fever (FMF) has been appreciably expanded in the last 10 years. Over 8 years, we studied the expanded clinical profile of FMF in 476 children. Of these, 81% had abdominal pain, 41% chest pain, 42% arthritis, 12% severe myalgia, 12% skin manifestations, 4% scrotal swelling, 3% recurrent episodic fever, and one child (0.2%) developed recurrent hyperbilirubinaemia. Two (0.4%) children developed renal complications which were reversed by colchicine; however of 19 probands, 36 family members suffered from chronic renal failure. Our study indicates a familial predisposition to nephropathy in certain families with FMF. This study is the first to report the expanded clinical profile of FMF in a large group of Arab children, giving an opportunity to compare the findings with those in children with FMF in other ethnic groups, and to help in the study of genotype-phenotype correlation.
Insights
Familial Mediterranean fever (FMF) presents with a wider range of symptoms than previously recognized, including significant gastrointestinal and joint issues. This study highlights a familial tendency towards kidney problems in FMF patients.
Area of Science:
- Pediatrics
- Genetics
- Rheumatology
Background:
- Familial Mediterranean fever (FMF) is a genetic autoinflammatory disorder.
- The clinical spectrum of FMF has been observed to expand over recent years.
Purpose of the Study:
- To investigate the expanded clinical profile of FMF in a large cohort of pediatric patients.
- To identify familial predispositions to specific complications, particularly nephropathy.
Main Methods:
- Retrospective analysis of clinical data from 476 children with FMF over an 8-year period.
- Detailed documentation of presenting symptoms, complications, and family history.
Main Results:
- The study identified a broad range of clinical manifestations including abdominal pain (81%), chest pain (41%), and arthritis (42%).
- Renal complications were observed in 0.4% of children, with a notable familial predisposition to nephropathy in 36 family members.
- Other reported symptoms included myalgia, skin manifestations, scrotal swelling, and recurrent fever.
Conclusions:
- FMF exhibits a more diverse clinical presentation in children than previously documented.
- A familial predisposition to nephropathy associated with FMF warrants further investigation.
- This research provides valuable data for genotype-phenotype correlation studies in FMF, particularly within the Arab ethnic group.
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