Allergic contact dermatitis - Anogenital in
See also in: Overview,Cellulitis DDx,External and Internal Eye,Hair and Scalp,Nail and Distal Digit,Oral Mucosal LesionAlerts and Notices
Important News & Links
Synopsis
Allergic contact dermatitis (ACD) is a delayed-type (type IV) hypersensitivity reaction that occurs when allergens activate antigen-specific T cells in a sensitized individual. It typically requires repeated exposures before an allergic response is noted and most commonly occurs 24-48 hours after exposure to the offending agent.
ACD can occur in response to topical agents, systemic exposure via ingestion, or innocuous transfer of the culprit agent via the fingertips.
Use of soap, topical anesthetic agents, spermicides, rubber accelerators found in condoms, and topical steroids have all been reported to cause ACD in the genital area. Lipstick-induced penile dermatitis has not been reported but is noted as a theoretical concern for individuals sensitive to octyl gallate.
ACD can present as a systemic contact reaction with widespread lesions when the offending agent is ingested, present in an implanted device, or used in a manner that covers a large portion of the body (eg, body washes). Baboon syndrome (symmetric, sharply demarcated erythema of the gluteal or inguinal area as well as other intertriginous or flexural sites) has also been reported as a presentation of systemic ACD.
Passive transfer of poison ivy resin is also a cause of penile ACD.
Related topic: irritant contact dermatitis
Codes
L23.9 – Allergic contact dermatitis, unspecified cause
SNOMEDCT:
40275004 – Contact dermatitis
Look For
Subscription Required
Diagnostic Pearls
Subscription Required
Differential Diagnosis & Pitfalls
Subscription Required
Best Tests
Subscription Required
Management Pearls
Subscription Required
Therapy
Subscription Required
Drug Reaction Data
Subscription Required
References
Subscription Required
Last Updated:10/03/2024
- Improve treatment compliance
- Reduce after-hours questions
- Increase patient engagement and satisfaction
- Written in clear, easy-to-understand language. No confusing jargon.
- Available in English and Spanish
- Print out or email directly to your patient