Every year, millions of people treat themselves for pubic lice. Pubic Lice is an STD caused by a small, light brown, flat, wingless insect called Phthirus pubis. It looks like a crab and so the STD is also called "crabs" or "cooties". This is because the insect has claws like a crab, which it uses to hold on to the pubic hair. The insect likes to feed on blood. Pubic lice occur when adult lice lay eggs, called nits, on the hair shaft close to the skin. The egg, which is white and shiny, requires 7 to 10 days to hatch. A typical infestation is by less than a dozen lice.
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