<unk>  is a type of acute or chronic inflammation of the skin caused by exposure to the chemical or physical agents. Some symptoms of<unk>  can include itchy or dry skin, a red rash, bumps, blisters, and swelling. The rash is not contagious or life-threatening, but it can be very uncomfortable.<unk>  results from either exposure to allergens (allergic<unk>  or irritants (irritant<unk> . Allergic<unk>  involves a delayed type of hypersensitivity and previous exposure to allergen to produce a reaction. Irritant<unk>  is the most common type and representing for the 80% of all<unk>  cases. It is caused by prolonged exposure to irritants leading to direct injury to the epidermal cells of the skin that activate innate immunity system which result in inflammatory cutaneous reaction.Phototoxic dermatitis occurs when the allergen or irritant is activated by sunlight. Diagnosis of allergic<unk>  can often be supported by patch testing.
Contact dermatitis
Angioedema
Autosensitization dermatitis
Atrophic vaginitis
Phototoxic tar dermatitis
Allergic contact dermatitis
Drug eruption
Rodent mite dermatitis