ABSTRACT
Seborrheic dermatitis affects 1-3% of the general population with up to 95% of patients having scalp involvement.
• The skin along the frontal hairline is most affected with mild erythema (Figures 16.1, 16.2) and scaling and the skin lesions often follow hairline recession in patients with pattern alopecia (Figure 16.3). Itching is common and scalp excoriations can be observed (Figure 16.4). Small follicular pustules may
occur. Other hairy regions, such as the beard, the moustache, eyelashes (Figure 16.5) and eyebrows are also commonly affected. In newborns, seborrheic dermatitis typically produces cradle cap (Figure 16.6).
