Clinical and demographic characteristics of children with familial mediterranean fever in Central Anatolia

Results The mean age of disease onset was 5.1 ± 3.6 years and the mean age at diagnosis was 7.3 ±3.1 years. The mean number of attacks per year was 7.7 ± 7.8, the mean duration of attacks 1.7 ± 1.6 days. The most common clinical manifestations were fever (91.6%) and abdominal pain (90.3%). The other manifestations were arthralgia (44.1%), arthritis (18.6%), headache (17.3%), myalgia (15.6%), vomiting (11%), chest pain (6.8%), splenomegaly (5.5%), diarrhea (5.5%) and erisipelas like eritema (3.4%). Amyloidosis (1.8%) and proteinuria (1.8%) were also determined. Most of patients had compound heterozygote genotype (n=86, 28.6%) and the most common homozygote mutation was M694V homozygosity (n=65, %21.6). The frequency of headache in the patients with homozygote M694V mutation (n=18, %29.5) and the frequencies of arthritis in patients with homozygote E148Q (n=1, %33.3) and M694V mutations (n=16, % 26.2) were significantly higher than the patients with other mutations (p<0.05, for all of them).