erythema induratum. solitary, chronically stationary, 4.0 x 3.0 cm in size, only imperceptibly growing, firm, moderately painful, reddish-brown, flatly raised, rough, scaly nodules with a deep-seated part (iceberg phenomenon). intermediate painful ulcer formation (Fig). no evidence of mycobacteriosis.
Candidosis intertriginous: 75-year-old woman. for nearly 2 weeks red plaque isolated only in the left axilla. distinct itching. notice the marginal satellite nodules. occasionally small pustules.
Lichen planus exanthematicus. symmetricgeneralized distribution pattern of Lichen planus. the densification of the efflorescences in the belt region is to be interpreted as (pressure-induced) Koebner phenomenon.
Bowen's disease:long-standing, slow-growing, sharply defined large-area, sometimes erosive, sometimes scaly, less symptomatic, sometimes slightly burning, red plaque.
Candida granuloma: Recurrence at the forearm extensor side in a 28-year-old patient 1 year after complete regression of the granulomas under antifungal systemic therapy.
Erythema chronicum migrans: about 2-3 months old with slow peripheral expansion; painless, non-itching, circular erythema which is well distinguishable from normal skin; the bite is still centrally visible.
Cellulitis eosinophil: acute formation of circumscribed, large, sharply margined plaques The surface of the plaques may have an orange peel-like texture (see following figure)
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