What are high-risk behaviors for STDs?

High-risk behaviors for sexually transmitted diseases (STDs) include:

* Unprotected sex, including sex without a condom or dental dam, with multiple partners or with someone who has multiple partners

* Sex with someone with an STD

* Sexually transmitted infection (STI) symptoms such as unusual discharge, sores, or pain

* Sharing needles or other drug paraphernalia

* Being under the age of 25

* Being male who has sex with males (MSM)