The condition varies from a mild, self-limited rash (E.<unk>  minor) to a severe, life-threatening form known as<unk>  major (or<unk>  majus) that also involves mucous membranes. Consensus classification: *<unk>  minor—typical targets or raised, edematous papules distributed acrally *<unk>  major—typical targets or raised, edematous papules distributed acrally with involvement of one or more mucous membranes; epidermal detachment involves less than 10% of total body surface area Stevens–Johnson syndrome and toxic epidermal necrolysis used to be considered part of the<unk>  spectrum, but that is no longer the case. The mild form usually presents with mildly itchy (but itching can be very severe), pink-red blotches, symmetrically arranged and starting on the extremities. It often takes on the classical "target lesion" appearance, with a pink-red ring around a pale center. Resolution within 7–10 days is the norm. Individuals with persistent (chronic)<unk>  will often have a lesion form at an injury site, e.g. a minor scratch or abrasion, within a week. Irritation or even pressure from clothing will cause the erythema sore to continue to expand along its margins for weeks or months, long after the original sore at the center heals.<unk>  of tongue
Erythema multiforme
Serum sickness
Streptococcal intertrigo
Heat urticaria
Urticarial erythema multiforme
Cold urticaria
Blister beetle dermatitis
Cutaneous larva migrans