Trichomoniasis is an infection caused by a parasite, commonly seen in people with vaginas, although it can be seen in penis owners as well. The parasite can be transmitted through anal, oral or vaginal intercourse or through sharing a sex toy. This infection is common and can be treated with medication prescribed by a doctor.
Sources:
https://www.nhs.uk/conditions/trichomoniasis/
https://www.cdc.gov/std/trichomonas/stdfact-trichomoniasis.htm
https://www.mayoclinic.org/diseases-conditions/trichomoniasis/symptoms-causes/syc-20378609
https://my.clevelandclinic.org/health/diseases/4696-trichomoniasis
https://www.webmd.com/sexual-conditions/guide/trichomoniasis