228 patients clinically diagnosed as superficial fungus infections (115 scaly ringworm of the scalp, 13 black dot, 9 favus, 9 kerion, 48 tinea corporis, 18 tinea cruris, 9 onychomycosis, 5 tinea pedis and 2 tinea barbae) were examined mycologically. 30 cases with T. Violaceum infection were examined immunologically. T. violaceum was the most common dermatophyte (45.6%), T. rubrum (5.3%), T. schoenleinii (4.8), T. mentagrophytes (3.5%) and E. floccosum (1.8%). In 30 cases with T. violaceum infection there was a significant decrease in Erosette particularly in chronic cases. The helper/suppressor ratio of T-lymphocytes (detected by monoclonal antibodies) in patients was 0.99:1 while in control cases it was 1.6:1. There was a marked increase in IgM and IgG but not in IgA levels. The C3cfraction of the complement showed a slight decrease and C4 a marked decrease in comparison with the control.