4 Terrifying sexually transmitted diseases you didn’t know about

2. Molluscum Contagiosum

What It Is: This is a viral STD spread through skin-to-skin contact—not necessarily through sexual intercourse. “And actually, it’s a common skin infection—children can get it—but when it’s seen on your genitals, it’s considered an STD.”
Symptoms: The STD is characterized by raised, fluid-filled bumps on your genitals. “They can be as small as a pinhead or large as a pencil eraser,” says Wider. Usually, the bumps don’t hurt, but they can become itchy.
Treatment: Doctors can diagnose this by looking at your rash. Some doctors will simply freeze it off; there are also prescription creams.