Early and later signs and symptoms of STDs include genital lesions or sores (as with herpes or HPV), urethritis (with gonorrhea or Chlamydia), systemic symptoms that affect the entire body (such as HIV), and bacteria, viruses, or parasites.

What STD causes small painful lesions?

Genital Herpes Symptoms

You may feel itchy or tingly around your genitals. This is usually followed by painful, small blisters that pop and leave sores that ooze or bleed. Most people notice symptoms within a few weeks after they catch the virus from someone else.

What STD causes oral lesions?

Oral Herpes

Herpes causes oral blisters and cold sores, which usually heal in 7–10 days, but can break out again at any time. Oral herpes can be transmitted to genital tissue, even when no symptoms are present.