Original Article: http://www.mayoclinic.com/health/medical/IM02939
- Poison ivy plant with berries
- Poison oak plant
- Poison sumac plant
- Positive reaction to allergy test
- see all
- Slide show: Types of dermatitis
Atopic dermatitis can cause small, red bumps, which can be very itchy. When scratched, the bumps may leak fluid and crust over.