Perianal infection with beta haemolytic streptococcus.

A prospective study of 50 children with beta haemolytic streptococcal perianal infection and related disorders identified oedematous perianal skin and cracking on parting the buttocks, forming superficial multiple fissuring, as the characteristic features of such infection, and confirmed the value of skin culture in its diagnosis. Treatment by oral amoxycillin with clavulanic acid and a topical ointment containing bacitracin was effective in all patients.