| Symptoms | |
|---|---|
| Bacterial | |
| Gonorrhea | Men: yellowish penile discharge; burning or painful urination Women: often no early symptoms; vaginal discharge; burning or painful urination |
| Syphilis | Painless chancre, or sore; swollen lymph nodes |
| Chlamydia | Men: many are symptom-free; burning or painful urination Women: most are symptom-free; painful urination and vaginal discharge |
| Parasitic | |
| Pubic lice | Intense itching in the pubic area |
| Viral | |
| Genital herpes | Painful blisters on or inside the genitals; sometimes accompanied by fever, swollen lymph nodes, bodily aches and pains |
| Human Papilloma Virus (HPV) | Often no early symptoms; genital warts in some cases; can lead to cancer in rare cases |
| AIDS (acquired immune deficiency syndrome) | Initial HIV infection may be accompanied by mild flulike symptoms; HIV virus can be dormant for years; AIDS is characterized by severe weight loss and increased susceptibility to other diseases and infections |