Presents as perfectly smooth, non-scaly, non-inflammatory patches of complete hair loss with characteristic 'exclamation point' hairs at the periphery.
Causes scarring alopecia with atrophic, hyperpigmented or hypopigmented plaques and follicular plugging.
Presents as multiple, boggy, painful nodules on the scalp that interconnect via sinus tracts and lead to scarring alopecia.
A scarring alopecia characterized by pustules at the edge of expanding patches of hair loss, often with 'tufted' hairs emerging from a single follicular opening.
Lichen planopilaris causes a scarring alopecia with perifollicular erythema and scale, primarily at the vertex and frontal scalp.
Presents as well-demarcated, erythematous plaques with a thick, silvery scale that can extend beyond the hairline, but does not typically cause scarring alopecia.
Causes diffuse, greasy, yellowish scale and erythema on the scalp but does not typically cause significant hair loss unless very severe.
Hair loss from compulsive pulling, characterized by patches of broken hairs of varying lengths, not scale or inflammation.
