The usefulness of skin prick tests in the management of atopic dermatitis is discussed on the basis of results from testing 100 patients, mean age 23 years. Skin prick tests may be useful when allergies to food are suspected, and also when it is suspected that the dermatitis is aggravated due to reactions to airborne allergens. Testing with a series of common inhalant allergens may provide information about the tendency to respond with IgE-synthesis. From a practical and economical point of view, a skin prick test may be a good alternative to other techniques for allergy testing.