Why is the distribution of a contact dermatitis rash important?

The location and distribution of the dermatitis are vital clues to the underlying culprit (Table 9-2). For example, an eczematous dermatitis on the dorsal feet should alert the clinician to the possibility of shoe dermatitis.

Table 9-2. Location of Contact Dermatitis and Suspicious Agents
	LOCATION		SUSPICIOUS AGENT
	Eyelids		Nail polish, eye makeup, airborne allergens
	Earlobes or neck		Metal jewelry
	Forehead, scalp margins		Hair dyes
	Face		Cosmetic fragrances and preservatives, airborne allergens
	Axilla		Deodorants
	Hands		Gloves, occupational contacts
	Waistband		Elastic
	Dorsal feet		Shoes