Sexually transmitted diseases (STDs), also known as venereal diseases, are contagious infections that spread through unprotected sex. Since many STDs initially show no symptoms, people may unknowingly pass them on to others. Understanding common STDs, their symptoms, risks, and treatment options is essential for prevention and management.

STDs
What is an STD?
An STD is a disease contracted through unprotected sexual contact. The pathogens responsible for these diseases—bacteria, parasites, or viruses—can be present in bodily fluids like semen, vaginal fluid, blood, and can also be found on mucous membranes or the skin. STDs spread during sexual activities, including intercourse without a condom.
While STD stands for "sexually transmitted disease," the term STI ("sexually transmitted infection") is also used to describe infections that have not yet developed into diseases but still pose serious health risks if untreated. Regular testing is crucial for all sexually active individuals.
Common STDs
STDs are widespread, particularly among people with multiple sexual partners or those under 25. Below are some of the most common STDs:
- Chlamydia: Caused by the Chlamydia trachomatis bacterium, it can infect the urethra, cervix, rectum, or throat.
- Gonorrhea: Triggered by the Neisseria gonorrhoeae bacterium, it leads to inflammation in the genitals, anus, or throat.
- Genital Warts: These are caused by the human papilloma virus (HPV) and appear around the genital and anal areas.
- Syphilis: A bacterial infection starting with sores on the genitals, caused by Treponema pallidum.
- Trichomoniasis: This parasitic infection affects the vagina, urethra, and bladder.
- Genital Herpes: Caused by the herpes simplex virus, which remains in the body and can flare up due to factors like stress or a weakened immune system.
- HIV: The human immunodeficiency virus weakens the immune system and can develop into AIDS if left untreated. It spreads through unprotected sex or contact with contaminated blood.
- Genital Infections: These include yeast or fungal infections, such as candida, which are more common in women.
Symptoms of STDs
STD Testing
Treating STDs with medication
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