Trichotillomania (TTM) or hair pulling disorder is characterized by repetitive pulling of hair on
the body whereas Polycystic Ovarian Syndrome (PCOS) is a metabolic-endocrine disorder,
manifested by irregular menstrual cycle and clinical hyperandrogenism. Both disorders
commonly occur in young females. TTM and PCOS may be related and share the same
pathophysiology. We reported a case of a teenager with TTM and PCOS, which were triggered
by stress. Neurobiological mechanism may explain the co-occurrences between TTM and
PCOS. Further research in the neurobiology of TTM and PCOS may better explain the cooccurrences between the two disorders.