Please come see us if you think you may have an STD or you want to discuss reducing your risk of infection. Crabs are very small bugs that attach themselves to your pubic hair and bite your skin. Scabies are bugs that dig under your skin where they lay their eggs, often in the genital area. Crabs and scabies both cause extreme itching and can be hard to see. They are passed from one person to another during sex, but can also be transmitted by having contact with clothes, bedding, and towels that were used by an infected person. There are over-the-counter and prescription creams that can get rid of crabs and scabies.