Evaluating Contact Dermatitis

Introduction to Essential Questions

The British Journal of Dermatology recommends systematically exploring atopic background, temporal patterns, product exposures, occupational factors, and environmental triggers to identify the causative agent and distinguish between irritant and allergic mechanisms 1, 2

The British Journal of Dermatology suggests asking specifically about childhood atopic dermatitis, asthma, hay fever, and family history of atopy to distinguish endogenous/atopic dermatitis from contact dermatitis 1, 2

The British Journal of Dermatology advises determining where symptoms initially began and how they subsequently spread, as the pattern of progression provides crucial diagnostic clues 1, 2
The British Journal of Dermatology recommends asking whether symptoms improve during weekends, holidays, or when away from specific environments, and whether they recur upon return, as this temporal relationship strongly suggests occupational or environmental triggers 1, 2

The British Journal of Dermatology suggests questioning about relationship to specific products, especially cosmetics, personal-care products, topical medications, clothing, bandages, or protective equipment like gloves, as these are common culprits 1, 2
The British Journal of Dermatology advises obtaining a detailed history of all wash products contacting the skin, as most contain harsh emulsifiers/surfactants that damage the skin barrier, particularly in predisposed individuals 1, 2

The British Journal of Dermatology recommends taking a detailed occupational history including specific tasks performed, products handled at work, and review of health and safety data sheets, as occupational dermatitis accounts for approximately 70% of occupational skin disease 1, 2, 4

The British Journal of Dermatology warns against relying solely on morphology and distribution to predict the cause, as clinical features are unreliable in distinguishing atopic/endogenous dermatitis from irritant or allergic contact dermatitis, even in children 1, 2
The British Journal of Dermatology advises against overlooking occupational exposures that might transfer to other body areas via hands, as this can prevent healing despite apparent allergen avoidance 4