The etiology of idiopathic facial palsy (IFP) is still not defined. Familia
l inheritance has been found in 4-14% of cases. Among 116 patients with IFP
admitted to the otolaryngology and neurology clinics at Kutahya State Hosp
ital, 12 had positive family histories involving 10 different families. Rev
iew of the patients' histories showed that 13 members of families previousl
y had IFP. In all, the 25 patients with familial IFP consisted of 12 males
and 13 females and had an average age at onset of 34.3 years. Class I human
leukocyte antigen (HLA) was investigated in 11 patients with familial IFP
belonging to four separate families. The follow-up period was approximately
2 months. All cases except one recovered completely, with the latter patie
nt having minimal contracture and facial paresis. However, HLA showed no si
gnificant increases in class I antigens. No notable difference was found in
the clinical courses of patients with familial and non-familial IFP.