Sexual conditions, such as STDs and sexual problems, need a medical evaluation and treatment. Frequently, there are no STD symptoms, although there's sometimes a discharge from the vagina or the penis and burning or pain during urination. Doctors use STD tests to diagnose sexually transmitted diseases such as chlamydia, gonorrhea, syphilis, and trichomoniasis. Whereas STD treatment can help resolve these sexual conditions, practicing safe sex can prevent STDs.
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### Select a Guide
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[Obesity Linked to Erectile Dysfunction](http://www.webmd.com/erectile-dysfunction/news/20081031/obesity-linked-to-erectile-dysfunction)
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A new study shows that obesity has a significant impact on male sexual health.
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[Doctors: Test All Patients Over 13 for HIV](http://www.webmd.com/hiv-aids/news/20081201/doctors-test-all-patients-over-13-for-hiv)
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Doctors should routinely offer all their patients over age 13 a blood test to screen for HIV, the American College of Physicians urges in new guidelines.
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[Read Full Article](http://www.webmd.com/erectile-dysfunction/news/20081031/obesity-linked-to-erectile-dysfunction)
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[Read Full Article](http://www.webmd.com/hiv-aids/news/20081201/doctors-test-all-patients-over-13-for-hiv)