Hello,
This sounds like
dermatitis.
Dermatitis can result from infections, allergies, and irritants.
It is very important that STDs have been ruled out.
Dermatitis may also occur due to contact with an allergen or irritant like soap, creams, synthetic cloth, or after vigorous sexual intercourse or masturbation. The skin in this part is very delicate and can be easily inflamed and this is likely to be the reason of your symptoms.
Sometimes when your partner has vaginal
candidiasis, allergy and inflammation occur after penile exposure to the candida lesions during sexual intercourse.
I would advise you to follow up with your doctor for exclusion of other skin diseases like fungal infection.
Please keep us updated.
Best regards.
This answer does not substitute for direct medical consultation.
Dr. Safaa Mahmoud.
MB BCh, MSc Internal Medicine. MD Medical Oncology.
PhD Experimental Medicine and Biochemical Science.