Allergic contact dermatitis

Common symptoms of allergic contact dermatitis are:

• Itchiness.
• Bumps and blisters, sometimes with oozing and crusting.
• Swollen rash.

Allergic contact dermatitis results when the skin touches substances that it's sensitive to. These substances are called allergens. The rash usually affects only the area that came into contact with an allergen. Common allergens are perfumes, personal care products, poison ivy, ragweed pollen and nickel, which is used in jewelry and other items.