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WordNet
contact dermatitis

n. a delayed type of allergic reaction of the skin resulting from skin contact with a specific allergen (such as poison ivy)

Wikipedia
Contact dermatitis

Contact dermatitis is a type of inflammation of the skin.

It results from either exposure to an allergens ( allergic contact dermatitis) or irritants ( irritant contact dermatitis). Phototoxic dermatitis occurs when the allergen or irritant is activated by sunlight. Diagnosis of allergic contact dermatitis can often be supported by patch testing.

Usage examples of "contact dermatitis".

When blindfolded patients are deceived into believing they're being touched by a leaf such as poison ivy or poison oak, they produce an ugly red contact dermatitis.

And it's my guess that if it comes out this quickly, it's simple contact dermatitis and there aren't any serious side ef­.

And it's my guess that if it comes out this quickly, it's simple contact dermatitis and there aren't any serious side effects.