What causes jock itch and anal itching after having sex?
could be a STD
Welcome to HealthcareMagic.
I have read your query and understand your concern.
The itching could be due to an STD like gonorrhoea or trichomoniasis. But you need to see a dermatologist for a clinical examination and evaluation to help reach a diagnosis and further management. As for both of these your Z-Pak will not work.
Hope i have been helpful.
Dr. Ashish Verma