Depending on the type of sexually transmitted disease, the most common symptoms include painful urination, abnormal discharge from the penis or vagina, itching or irritation in the genital area, and pain during intercourse, according to Mayo Clinic. STDs often present no noticeable symptoms.
Chlamydia is a bacterial infection affecting the genital area that often causes no symptoms, as confirmed by Mayo Clinic. When they do occur, symptoms begin one or more weeks after the initial infection and may include vaginal or penile discharge, pain in the lower abdomen, testicular pain and painful urination. Symptoms of the bacterial infection gonorrhea generally surface within 10 days of infection and include painful or burning urination, swollen testicles, heavy menstrual bleeding, and pain during bowel movements. Cloudy, bloody or thick discharge from the vagina or penis may also be present.
The common parasitic infection trichomoniasis may cause penile discharge, vaginal or penile itching, and pain during intercourse, according to Mayo Clinic. Vaginal discharge may be clear or white, or it may have a green or yellow tint. If any abnormal symptoms are present, regardless of their severity, the affected persons should contact a doctor for proper diagnosis and treatment. All partners should also be notified so they can receive treatment. If left untreated, STDs can lead to complications such as open sores, infertility and an increased risk of contracting HIV.