Trichotillomania associated with the "Friar Tuck sign" and nail-biting.

The document discussed trichotillomania, a type of traction alopecia caused by compulsive hair pulling, which could resemble other hair loss conditions like alopecia areata, androgenetic alopecia, and tinea capitis. Differentiating trichotillomania from these conditions was crucial due to differing treatments. The study presented three cases exhibiting the "tonsure pattern" or "Friar Tuck sign" and nail-biting (onychophagia) as clinical identifiers of this syndrome.