Trich is caused by a really tiny parasite called a trichomona (you can't see it with the naked eye). People get trich from having unprotected sexual contact with someone who has the infection. It's spread when semen (cum), pre-cum, and vaginal fluids get on or inside your penis, vulva, or vagina.

What is the origin of trichomoniasis?

Trichomoniasis is caused by a one-celled protozoan, a type of tiny parasite that travels between people during sexual intercourse. The incubation period between exposure and infection is unknown, but it's thought to range from four to 28 days.

How do you get trichomoniasis in the first place?

It spreads during unprotected anal, oral, or vaginal sex, usually between a man and a woman or between two women. Keep in mind that a man doesn't have to ejaculate to give his partner the parasite. In can also be spread by sharing sex toys. In men, the parasite usually infects the urethra inside the penis.