Trichomoniasis

Trichomoniasis, sometimes called "trich" (pronounced "trick"), is a common sexually transmitted infection (STI) that affects both females and males, although symptoms are more common in females.

Trichomoniasis is caused by the single-celled protozoan parasite, Trichomonas vaginalis. The vagina is the most common site of infection in girls and women, and the urethra (urine canal) is the most common site of infection in boys and men. The parasite is sexually transmitted through penis-to-vagina intercourse or vulva-to-vulva (the genital area outside the vagina) contact with an infected partner. Women can get the disease from infected men or women, but men usually contract it only from infected women.

How common is trichomoniasis?

Trichomoniasis is the most common curable STI in young, sexually active women. An estimated 7.4 million new cases occur each year in women and men.

What are the signs and symptoms of trichomoniasis?

While trichomoniasis affects both women and men, symptoms are more common in women. Most men with trichomoniasis do not have any signs or symptoms. However, some men may have a temporary irritation inside the penis, mild discharge, or notice a slight burning after peeing (urinating) or ejaculating. Some women may have signs or symptoms which include:

• discharge that is green, yellow or grey
• a bad smell
• itching in or around the vagina
• pain during sex
• pain when peeing (urinating)

How do I know if I have trich?

If you have symptoms, see your healthcare provider. She or he will need to do a physical exam to diagnose the infection. The parasite is harder to detect in men than in women. General tips for women to help their provider find out what they may have include:

• Schedule the exam when you're not having your monthly period.
• Don't douche 24 hours before your exam.
• Don't use vaginal sprays 24 hours before your exam.
• If you have sex less than 24 hours before the exam, use condoms.

What is the treatment for trich?

Trichomoniasis is curable with antibiotics. An antibiotic called Metronidazole (Flagyl) is usually prescribed. If you are prescribed treatment, use all the medicine prescribed, even if your symptoms go away. Your sex partners must also be treated, or you can get trich again. Don't have sex until all partners have finished the medication.

Pregnancy and trichomoniasis

Trichomoniasis can cause babies to be born early or with low birth weight. If you think you may be pregnant be sure to tell your healthcare provider. Women in the first three months of pregnancy should not take medicine for trich because it might hurt the baby. You can take medicine after the first three months. Talk to your healthcare provider about them.