Seborrhoeic dermatitis (SD) is a papulosquamous (presence of both papules and scales) disorder patterned on the sebum-rich areas of the scalp, face, and trunk. The current treatment does not cure the disease permanently. Therefore it must be repeated when the symptoms recur, or even prophylactically. Corticosteroids and antifungals are the mainstay of therapy. Topical corticosteroids rapidly reduce the cutaneous signs of disease, but are associated with a high frequency of relapse when treatment is stopped. They are reserved for acute flare-ups only as they may precipitate recurrences and dependence. In addition, chronic use of corticosteroids is associated with side-effects. The scientific rationale for the use of K40 for treatment of SD was based on clinical evidence that K40 improves erythema and desquamation with mild adverse reactions in a few cases. The primary objective of the study was to evaluate the efficacy of K40 (K40a and K40b combined) compared to placebo after 4 weeks treatment as measured by the sum of erythema and desquamation scores at Week 4.
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Erythema and desquamation scores
Timeframe: Week 4