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

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.

Related Concept Videos

Pharmacokinetics in Pediatric Patients: Overview and Drug Absorption01:23

Pharmacokinetics in Pediatric Patients: Overview and Drug Absorption

Understanding the physiological differences in the pediatric population is crucial for effective pharmacotherapy. Neonates, infants, and children exhibit significant variations in gastric pH, gastric emptying time, intestinal transit time, and biliary function. These variations profoundly affect oral drug absorption, necessitating a nuanced approach to pediatric dosing.Neonates present with a unique physiological profile, having a gastric pH greater than 4 and faster and more irregular gastric...
Pharmacokinetics in Pediatric Patients: Drug Metabolism01:24

Pharmacokinetics in Pediatric Patients: Drug Metabolism

In pediatric care, understanding the nuances of hepatic drug metabolism is crucial, as it significantly differs from that of adults. This divergence is primarily due to the developmental stage of drug-metabolizing enzymes, which affects how medications are processed in the body. In neonates, for instance, the activity of Phase I enzymes—critical for the initial breakdown of drugs—is markedly reduced, functioning at just 20–40% of the levels seen in adults. This reduction poses a challenge in...
Toxidromes: Clinical Features01:30

Toxidromes: Clinical Features

Toxidromes are specific patterns of symptoms resulting from toxic substance exposure. They help in the identification and treatment of poisoning. The symptoms of each toxidrome group indicate poisoning by a certain class of chemicals or drugs.1. Sympathomimetic: Stimulates the sympathetic nervous system. Symptoms include agitation, increased heart rate (HR), blood pressure (BP), respiratory rate (RR), temperature, and pupil size. Drugs like cocaine and amphetamines, along with tremors and...
Myocarditis II: Clinical Features and Diagnostic Tests01:27

Myocarditis II: Clinical Features and Diagnostic Tests

Myocarditis is an inflammation of the heart muscle. The symptoms vary widely, encompassing asymptomatic presentations to severe, acute manifestations.Clinical PresentationAsymptomatic cases: In some instances, myocarditis may be asymptomatic, with the infection resolving without intervention. These cases often go undetected unless discovered incidentally through diagnostic imaging or tests conducted for other reasons.General Early Symptoms: Early symptoms of myocarditis are non-specific and can...
Rocky Mountain Spotted Fever01:26

Rocky Mountain Spotted Fever

Rocky Mountain Spotted Fever (RMSF) is a severe tick-borne illness caused by Rickettsia rickettsii, a Gram-negative, coccobacillary bacterium. This pathogen is an obligate intracellular parasite, requiring a host cell for replication. Transmission occurs through the bite of an infected tick. In the United States, the most important vectors are Dermacentor variabilis (American dog tick) and Dermacentor andersoni (Rocky Mountain wood tick), though other tick species may also serve as vectors.
Malaria01:29

Malaria

Malaria pathogenesis in humans reflects a delicate interplay between parasite biology and host response. Clinical illness reflects a host’s immune response to the parasite’s asexual replication cycle, which is often asymptomatic in individuals with partial immunity. From the parasite's perspective, transmission between mosquito and human with minimal host pathology is evolutionarily advantageous. Among the six Plasmodium species infecting humans, P. falciparum and P. vivax dominate in global...