Bacterial* / microbiology

Bacterial vaginosis is the most common cause of abnormal vaginal discharge, affecting 23%–30% of reproductive-aged people
Bacterial vaginosis is caused by a disrupted vaginal microbiome balance. Symptoms include itch, dysuria, and a thin, grey discharge with a “fishy” odour, particularly after coitus. Risk factors include smoking and unprotected intercourse, including oral sex.