Rupioid psoriasis is a form of psoriasis with hyperkeratotic skin lesions.
(2) medications (lithium, hydrochlorothiazide, beta-blockers)
(1) circular plaques with concentric, cone-shaped hyperkeratosis resembling limpet shells
(2) erythematous base
(3) poor response to topical treatment
(4) responds to systemic agents
Other types of hyperkeratotic psoriasis are ostraceous and elephantine forms.
(1) psoriasiform hyperplasia
(2) confluent parakeratosis
(3) neutrophils within the stratum corneum
(4) diminished granular layer
(1) secondary syphilis
(3) disseminated histoplasmosis
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