Document Type

Article

Publication Title

Dermatology Online Journal

Abstract

Oral desensitization is a promising approach to reduce the frequency and severity of allergic contact dermatitis reactions to poison ivy. Rhus dermatitis, characterized by itching, redness, and blistering, can appear up to three weeks post-exposure in first-time sufferers and after 1-2 days in those previously exposed. Bentoquatam cream can serve as a barrier to protect the skin from contact with urushiol resin, but it must be applied before exposure to the plant. Current treatments focus on relieving symptoms and managing inflammatory reactions with topical therapies such as calamine lotion and corticosteroids. Oral desensitization involves administering small amounts of urushiol orally to induce immune tolerance. Although successful in food allergies, little research exists on the efficacy for poison ivy. We identified six studies, involving 410 human subjects, assessing the use of oral desensitization for poison ivy. Studies used various urushiol formulations in liquid or tablet form. Most yielded promising results with minimal adverse effects. The reported side effects of oral desensitization therapy include rash, pruritus ani, and flushing. These findings suggest that oral desensitization may decrease poison ivy reactions, potentially benefiting communities with frequent outdoor exposure. However, the limited number of studies and small sample sizes highlight the need for further research.

DOI

10.25251/pcyj0173

Publication Date

5-9-2026

Keywords

desensitization, poison ivy, urushiol, oral tolerance

ISSN

1087-2108

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