Adapta？？o transcultural da Massachusetts General Hospital (MGH) Hairpulling Scale para o idioma português (Brasil)

background: trichotillomania (ttm) is characterized by the act of pulling out, in a recurrent way, your own hair for pleasure, gratification or tension release, leading to a perceptible hair loss, and it is included in the impulse control disorders unclassified elsewhere of the dsm-iv-tr (apa, 1994) section. the massachusetts general hospital (mgh) hairpulling scale is an instrument used recently in many studies to assess trichotillomania symptoms. objective: the present paper aims to adapt this scale into the portuguese language. to cross-culturally adapt the massachusetts general hospital (mgh) hairpulling scale to portuguese and evaluate its internal consistency. this instrument aims to evaluate trichotillomania. methods: the work consisted of five steps: (1) translation; (2) back-translation; (3) peer review and evaluation of semantic and conceptual equivalences using experts; (4) instrument evaluation through a sample of students, by evaluating their level of understanding; and (5) analysis of the instrument’s internal consistency through cronbach’s a-coefficient. results: the instrument was translated and adapted to portuguese, and shown to be easily understood, with an internal consistency value of 0.96. discussion: the instrument is now translated and adapted to portuguese. measurement and reproducibility analyses are needed.