Trichostasis Spinulosa: An Overlooked Entity

The document described a case of trichostasis spinulosa (TS) in a 50-year-old female who presented with black macules on her nose, which were identified as vellus hairs bundled in a funnel-like structure. TS was noted as a common but often unrecognized disorder affecting the pilosebaceous unit, typically occurring in younger females with darker skin or older individuals with significant UV exposure. The condition was first identified in 1901 and involves the retention of multiple vellus hairs due to follicular hyperkeratosis or abnormal follicle angulation. TS can be triggered by factors such as topical treatments, UV light, and irritants. There are two variants: a nonpruritic type with facial lesions and a pruritic type with papules on the trunk and extremities. Treatment options include emollients, keratolytics, retinoids, and peeling with capryloyl salicylic acid, though the patient in this case refused treatment. The report aimed to raise awareness of TS.