First infection, infected by a vaginitis girlfriend, how to treat

Patient's question:

I and my girlfriend are both freshmen, 20 years old this year. She has vaginitis. After we had sex, my symptoms are excessive oil and discharge from the foreskin, accompanied by itching, and a bad odor has appeared. This means I have been infected. How should I treat it? Thank you

Doctor's answer:

Hello friend, your condition is likely caused by balanitis, which is often triggered by underwear friction, trauma, or local irritation from soaps and cleaning agents. It presents with swelling, redness, exudation, and erosion. Secondary infection may lead to purulent discharge, easily forming ulcers, accompanied by pain. You can use a 3% boric acid solution or a 0.05% Huanglian solution for wet compresses.