The patient notes redness, compaction of the skin of the palms after contact with washing powder. What type of allergic reactions are the cause of contact
dermatitis?
O Indirect IgE
O Mediated by macrophages and T- lymphocytes
O Indirect IgG, cytotoxic
O Mediated by immune complexes
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Answers
Answer:
Contact dermatitis is an inflammatory eczematous skin disease. It is caused by chemicals or metal ions that exert toxic effects without inducing a T-cell response (contact irritants) or by small reactive chemicals that modify proteins and induce innate and adaptive immune responses (contact allergens).[1][2][3][4]
Contact dermatitis is divided into irritant contact dermatitis and allergic contact dermatitis. Irritant contact dermatitis is a nonspecific response of the skin to direct chemical damage that releases mediators of inflammation predominantly from epidermal cells while allergic contact dermatitis is a delayed (type 4) hypersensitivity reaction to exogenous contact antigens. Immunological responses are due to the interaction of cytokines and T cells. In photo contact, allergic dermatitis lesions are confined to sun-exposed areas even though the allergen is in contact with covered areas
option b is the correct answer
Explanation:
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