Urticaria
Circumscribed, raised, edematous, red plaques surrounded by faint white halo. (Courtesy Dr. S. Walsh)
Toxic Epidermal Necrolysis – TEN
Widespread necrosis with painful blistering and denuding of epidermis.
Erythema Multiforme EM No.2
The macules and papules can have various appearances but tend to be monomorphic in a given patient. (Courtesy Dr. S. Walsh)
Erythema Multiforme EM – No.1
Macules/papules with concentric, light and dark erythematous rings. (Courtesy of Women’s College Hospital Slide Library, Toronto)
