This seems to be an allergic reaction to the semen. Semen allergy is a relatively rare allergic reaction where women experience symptoms including vaginal itching, burning and swelling in the genital area after unprotected intercourse. In severe cases of semen allergy, hives or swelling may appear elsewhere on the body.
The cause for this is not certain though it could be due to proteins in semen or, less commonly, it may be due to other allergic substances transmitted in semen, including some medications or some food and beverages like walnuts and Coca-Cola.
The use of condoms is the prime method of diagnosing semen allergy. If irritation goes away with condom use, semen allergy is considered a likely cause.
You could use anti-histamine medications like Cetrizine/Loratidine when you experience these bumps. Long-term treatment may include desensitization therapy or allergy shots.
You will have to se an allergist for this.
My husband seems to break out with an allergic reation after we have intercourse. The weird thing is he has had a vesectimy and there is no expulsion of sperm. Could he have this skin reaction due to the fact that the sperm stays within his body? It seems to happen within 20 to 30 minutes after we have sex or if we are unable to have sex for an extended period of time, as if there is a build up. The rash is raised and all over his body with severe itchiness. We thought maybe it was yeast but the timing of when it develops got us thinking it was something else. I get seasonal rashes from certain grasses and his rash looks more like that. It even goes around his eye. Please help.
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