Trichostasis Spinulosa: An Overlooked Entity

The document described a case of trichostasis spinulosa (TS) in a 50-year-old female, highlighting it as a common yet often unrecognized disorder of the pilosebaceous unit. TS was characterized by multiple vellus hairs bundled in a funnel-like structure, observed as black macules on the nose. The condition was first identified in 1901 and can be triggered by factors such as topical minoxidil, steroids, and UV exposure. Two variants exist: a nonpruritic type with asymptomatic lesions on the face, and a pruritic type with papules on the trunk and extremities. Treatment options include emollients, keratolytics, and retinoids, with capryloyl salicylic acid peeling showing promising results. The case aimed to raise awareness of TS.