Contact Dermatitis
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Itchy red plaques often in a line or geometric distribution depending on the type of offending substance. Acutely, the skin may have vesicles or blisters. Chronically, there may be thickened skin (lichenification) and scale. 2 types: allergic and irritant. Most common causes of allergic contact dermatitis include poison ivy and nickel. Irritant contact dermatitis is often seen on the hands due to over hand-washing.
Diagnosis
Careful history picks up obvious exposures. Patch testing for difficult to diagnose allergic causes.
Inflammation in the skin due to an irritating environment or contact with an allergen.
Principles of therapy
Avoid precipitating factors. Topical [clobetasol (strong), triamcinolone (mod.), hydrocortisone (mild)], or systemic steroids (prednisone).Tags: Dermatitis, Steroids
Category: Dermatology Notes
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