Sexually Transmitted Diseases

What are STDs/STIs?

STDs are sexually transmitted diseases. This means they are most often — but not exclusively — spread by sexual intercourse. HIV, chlamydia, genital herpes, genital warts, gonorrhea, some forms of hepatitis, syphilis, and trichomoniasis are STDs. In addition to the information below, you can learn more about sexually transmitted diseases from a variety of healthcare providers like Planned Parenthood.


Vaginitis is usually characterized by a vaginal discharge or by vulvar itching and irritation; a vaginal odor may be present.


High rates of HIV infection among patients who have chancroid have been reported in the United States and other countries.

Chlamydial Infection

The U.S. Centers for Disease Control and Prevention estimate that more than 4 million new cases occur each year.


Condyloma acuminata are genital warts caused by the human papilloma virus (HPV). HPV is one of the most common sexually transmitted diseases among young people in the United States today.

Genital Herpes

Genital herpes is caused by the herpes simplex virus (HSV) and may affect the genital area, or the mouth and lips. The usual symptoms are painful lesions.


Gonorrhea is one of the most common sexually transmitted diseases. It is probably under-reported among teenagers and young adults.

Granuloma Inguinale (Donovanosis)

Granuloma inguinale, a rare disease in the United States, is endemic in certain tropical and developing areas, including India, Papua New Guinea, central Australia, and southern Africa.


Hepatitis is an inflammation of the liver caused by certain viruses and other factors, such as alcohol abuse, some medications, and trauma.

Human Papilloma Virus

The most common sexually transmitted disease is the human papilloma virus or HPV, which is three times more common than herpes.

Lymphogranuloma Venereum (LGV)

Lymphogranuloma venereum (LGV), a rare disease in the United States which is caused by C. trachomatis. The most frequent clinical manifestation of LGV is tender inguinal and/or femoral lymphadenopathy.

Pelvic Inflammatory Disease

The most serious and common complication of sexually transmitted diseases (STDs) among women is pelvic inflammatory disease (PID), an infection of the upper genital tract.


Syphilis, a sexually transmitted disease, can be effectively treated with antibiotic therapy.

Venereal Warts

Venereal warts, also known as condyloma or genital warts, is a sexually transmitted disease (STD) caused by a virus that affects the skin on the outside of the body and the mucous membranes.


AIDS is the acronym for acquired immune deficiency syndrome. AIDS is caused by the human immunodeficiency virus (HIV).