Seborrheic dermatitis pattern. Fine white diffuse or patchy scale-like dandruff. Hair shaft infection then occurs; hairs break at surface, leaving alopecia areas. Broken hairs look like black dots.

Black dot pattern. Well-demarcated areas of hair loss appear. Infected hairs break, leaving black dots on scalp surface. Little or no inflammation. Occipital adenopathy may be present.

Inflammatory tinea capitis. The lesion near the vertex is boggy, with a scaling and crusted surface.