Werewolf syndrome

From Biology-Online Dictionary | Biology-Online Dictionary



A condition wherein the body, especially in the head, neck, and upper body, is covered with terminal hair, consequently resembling a folkloric or mythical human, werewolf


Werewolf syndrome is a type of hypertrichosis. Hypertrichosis refers to a condition characterized by an atypical growth of too much hair over the body. It may be localized, i.e. the hair growth over a certain body part or it may involve the entire body the condition is referred to as generalized hypertrichosis, as in the case of werewolf syndrome.

Werewolf syndrome derives its name from the appearance of too much hair growing on the body, thus, resembling a mythological or folkloric human, werewolf. Because of the startling appearance of individuals with this condition, they were seen as performers in circuses in the early times. The condition may also be referred to as terminal hypertrichosis when the hair growing atypically and in excess is a terminal type of hair, which is thick, long, and dark.

An extra chunk of gene in the X chromosome was reported as a possible link to the werewolf syndrome. Accordingly, the extra DNA chunk may have switched on an adjacent hair-growth gene (e.g. SOX3).1


  • wolfitis
  • severe hypertrichosis
  • terminal hypertrichosis
  • hyprtrichosis

See also:

1 'Werewolf' Gene May Explain Excess Hair Disorder. (2011). LiveScience.com. Retrieved from [[1]].