Localized Allergic Reactions in the Vagina

Mechanisms and Clinical Presentation

Localized vulvar and vaginal itching and swelling can occur as isolated symptoms of seminal plasma hypersensitivity without progressing to systemic anaphylaxis, according to the American Academy of Allergy, Asthma, and Immunology 1, 2
The vaginal mucosa contains mast cells that release inflammatory mediators when exposed to allergens, causing localized symptoms without systemic involvement, as reported by the American College of Allergy, Asthma, and Immunology 1, 3
Seminal plasma proteins with molecular weights ranging from 12 to 75 kd can trigger IgE-mediated localized reactions in the vagina, as stated by the American Academy of Allergy, Asthma, and Immunology 3, 4

Seminal plasma hypersensitivity is essentially a diagnosis by exclusion, and other causes to rule out include sexually transmitted infections, latex sensitivity from condoms, and transfer of food or drug proteins through semen, as recommended by the American College of Allergy, Asthma, and Immunology 1, 2
Prevention of reactions can be accomplished by correct use of condoms, as suggested by the American Academy of Allergy, Asthma, and Immunology 1, 4

Skin prick testing with whole human seminal plasma from the male partner is recommended for initial screening, as stated by the American Academy of Allergy, Asthma, and Immunology 1
In vitro tests (RAST and ELISA) of serum specific IgE are less sensitive than skin testing, according to the American College of Allergy, Asthma, and Immunology 1
A negative serologic test result for seminal plasma specific IgE does not exclude sensitization, as reported by the American Academy of Allergy, Asthma, and Immunology 1