The evaluation of allergic dermatitis begins with a history and physical exam.

Physical findings in those with allergic dermatitis include:

• Rash
• Blisters
• Skin scaling
• Skin peeling and crusting
• Hives

Tests may be required to make the diagnosis of allergic dermatitis.

Tests that may be used to evaluate allergic dermatitis include:

• Allergy skin testing
• Skin biopsy

For more information:

• Atopic dermatitis evaluation
• Contact dermatitis evaluation
• Poison ivy evaluation
• Urticaria evaluation