Hi, I have read about your concern. Thanks for asking. Let me tell you one thing about shingles. They are not sexually transmitted. Shingles are caused by a virus called Herpes zoster, the same virus which causes chickenpox which might be well known to you. Shingles only occurs in people who have had previous episode of chickenpox probably in childhood. In people who have chickenpox in childhood, the virus enters nerve cells in body called dorsal root ganglia. There it stays dormant. When the persons immune system is weakened, it gets reactivated and develops into shingles. Also it is restricted to only certain areas where that particular nerve supplies the skin called dermatomes. It doesnt occur in the way you have mentioned like red marks. Shingles has many blisters or vesicles. So dont at all worry about shingles. You might have developed some allergy to some clothes or due to excessive sweating. Just try to avoid clothes that irritate you. Try to keep the area with red rashes dry without getting wet with sweat. It will mostly resolve by itself. As bacitracin ointment has worked on them, you can continue applying it. If it doesn t resolve in few days, visit your dermatologist.