Ob-Gyn questions? Ask a gynecologist online.
Hello and thanks for trusting me to help you. I am a board certified consultant with over 30 years of experience.I understand your concern.
Well as you describe it seems Irritant/chemical dermatitis/allergy.
So you should apply OTC 1% hydrocortisone cream mixed with Bacitracin ointment.
Also take OTC Motrin and Claritin.
Wear loose fitted cotton clothes to prevent friction.
Cool water sitz bath with betadine solution can be helpful.
If you develop painful blisters then see your gynecologist for further evaluation and management.
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