research Trichotillomania associated with the "Friar Tuck sign" and nail-biting. 26 citations , February 1991 in “PubMed” Trichotillomania can be identified by a "Friar Tuck sign" and nail-biting.
research 발모벽 환자의 임상 병리조직학적 관찰 및 동물 실험적 연구 January 1999 in “대한피부과학회지” Trichotillomania is more common in young females and often linked to stress and psychiatric conditions, with hair loss and increased catagen hair observed.