A delayed hypersensitivity reaction that occurs after cutaneous exposure to an antigenic substance. Lesions occur at site of contact and are vesicular, weeping, crusting; linear arrangement of vesicles is common. Most frequent allergens are resin from plants of the genus Toxicodendron (poison ivy, oak, sumac), nickel, rubber, and cosmetics.
Treatment: Allergic Contact Dermatitis Avoidance of sensitizing agent; topical glucocorticoids; consideration of systemic glucocorticoids over 2-3 weeks for widespread disease. |