10 Common STDs You Should Know About

7. Crabs

Michail_Petrov-96 / Getty Images Crabs are pubic lice that are typically spread by contact with infested clothing, towels, or bedding. Crabs are parasitic insects that infest the genital hair and are occasionally found on other coarse body hair such as the armpits or even eyebrows. The most common symptom of crabs is itching, and the bites of the tiny bugs can cause pale blue spots. Occasionally, secondary bacterial infection can occur from scratching of the skin. Over-the-counter creams can eradicate crabs, and prescription medications can address more stubborn cases.