Sorry for late reply and inconvenience.
Thanks for all this additional information.
I understand your concern.
Well as you describe, your symptoms can be associated with rough and vigorous masturbation.
Now I would recommend some self-care measures like
Do cool water sitz bath with betadine solution twice a day for 5-10 minutes.
Clean the area with DIAL soap.
And afterward, apply OTC 1% hydrocortisone cream mixed with bacitracin ointment twice a day.
Use OTC Abzorb powder if you have excessive sweating.
And keep the area dry and clean.
Wear loose-fitting cotton clothes to prevent friction.
Take OTC Motrin and Claritin for a few days.
If your symptoms will persist then see your doctor for further evaluation and management.
Let me know if you have any further query so we can discuss it thoroughly in every aspect.
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