trichotillomania
Histologic Features
- Hair follicles mostly in catagen phase characterized by
- Few anagen hair bulbs in the subcutis
- Pleated hair shafts within the hair follicles containing melanin casts and cellular debris (trichomalacia)
- Superimposed lichen simplex in the form of thickened stratum corneum and epidermal hyperplasia
- A sparse inflammatory infiltrate in the dermis
Updated Wednesday, July 31, 2013 8:30:48 PM