3. Werewolf syndrome is the nickname of the mutation that causes a person to be born with excess hair. This mutation, known as hypertrichosis, is a condition characterized by excessive hair growth anywhere on a person’s body, states Wikipedia. The hair growth can’t be stopped, it can only be slowed down. You can be born with it or develop it later on, but those born with it usually suffer from more than one genetic mutation. Werewolf syndrome is a rare genetic disease so chances are you’ve never even seen this body feature before.
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