Trichotillomania is a little-known disorder with wider prevalence and
more significant consequences than previously believed. While sharing
similarities with obsessive-compulsive disorder, compelling difference
s from it have also been noted. This fact, coupled with recognized ove
rlap with other obsessive-compulsive spectrum disorders, has resulted
in the ongoing evolution of our conceptualization of this illness. Whi
le empirical evidence supports the use of behavioral treatment and pha
rmacotherapy, considerable research is still needed before we can prom
ise highly effective interventions tailored to the individual hairpull
er. This review will summarize the evidence supporting, as well as cha
llenging, a hypothesized link with obsessive-compulsive disorder. Curr
ent treatment approaches will be reviewed, as well as evidence for the
ir efficacy. Suggestions will be made for future directions in this fi
eld.