Table 2.

Common screening and rating instruments for trichotillomania

Instrument	Brief description
DSM-V	Diagnostic tool published by the American Psychiatric Association
MGH-HPS	Self-reported, 7-item questionnaire to assess repetitive hairpulling
PITS	Clinician-rated tool assessing hairpulling
NIMH-TSS	Clinical interview of 5 questions discussing hair-pulling behaviors
NIMH-TIS	Clinician rating of patient impairment
CGI	Clinical rating of illness severity, improvement/change, and therapeutic response

DSM-V, diagnostic and statistical manual of mental disorders, 5th edition; MGH-HPS, MGH* Hairpulling Scale; PITS, Psychiatric Institute Trichotillomania Scale; NIMH-TSS, NIMH** Trichotillomania Severity Scale; NIMH-TIS, NIMH** Trichotillomania Impairment Scale; CGI, Clinical Global Impression.

* Massachusetts General Hospital.

** National Institute of Mental Health.