A recurrent uncommon condition characterized by patches of white skin that appear thinner than usual, particularly around the genitals and anus. Sometimes, the condition does not warrant additional treatment, but extended care is often needed to manage symptoms.
While the exact cause of this condition is unknown, some believe that a dysfunctional autoimmune system or a hormonal imbalance may be relevant factors in its development. Both male and female adults and children can be affected; for children, the signs and symptoms may improve once they reach puberty. The condition is not contagious and cannot be spread through sexual intercourse despite typically affecting the genitals.