Allergic Contact Eczema

Allergic contact eczema (ACD) is a type of allergic skin reaction that occurs when your skin comes into contact with certain substances that cause an allergic reaction. The rash appears as red, irritated patches that are itchy and can become blistered.

Common allergens that can trigger ACD include metals such as nickel, cobalt, and chromium; preservatives such as formaldehyde and parabens; and plants such as poison ivy, poison oak, and poison sumac. Cosmetics, clothing, and jewelry are some of the everyday items that can cause ACD.

Symptoms of ACD include:

Redness and rash
Itching and burning sensations
Swelling and tenderness
Blisters that may ooze or crust over
Thickening of the skin

Treatment for ACD typically involves avoidance of the allergen and the use of topical corticosteroids to reduce inflammation and itching. Oral antihistamines may also be prescribed to help relieve symptoms.

If you suspect that you may have ACD, it is important to see a doctor for an accurate diagnosis. Your doctor will likely ask you about your symptoms and examine your skin to look for signs of ACD. To help determine if the issue is caused by an allergen, your doctor may also recommend an allergy patch test.