[How I explore… scalp and hairin erythemato-squamous disorders].

In their early stages, some dermatoses of the scalp such as psoriasis seborrheic dermatitis, tinea capitis and discoid lupus erythematosus are often hardly noticeable to others. However, the eruptions are occasionally severe and extensive. Reaching an adequate diagnosis is of utmost impor¬tance for an adequate healthcare.