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rupioid psoriasis
Etiology:
- HIV1 infection
- medications
- lithium carbonate
- hydroxychloroquine
- beta-blockers
Pathology:
- skin biopsy
- confluent parakeratosis
- neutrophils within the stratum corneum
- diminished granular layer
- psoriasiform hyperplasia
- telangiectasia within dermal papillae
Clinical manifestations:
- papulosquamous eruption
- erythematous circular plaques, with thick concentric ringlike scale
- concentric conelike scale* with appearance similar to limpet shells
- palmoplantar keratoderma
- no nail changes.
* images [1]
Differential diagnosis:
- secondary syphilis
- hyperkeratotic scabies
- HIV1 infection
- reactive arthritis
- disseminated histoplasmosis
* may be same entity as ostraceous psoriasis
Management:
- resistant to topical treatment
- systemic agents with reported benefit
- acitretin
- cyclosporine
- methotrexate
- adalimumab
- ustekinumab
General
psoriasis
References
- Hiu-Kan K, Cheng HS, Oliver FG
Images in Dermatology. Rupioid Psoriasis
JAMA Dermatol. 2021;157(7):859.
PMID: 33950158
https://jamanetwork.com/journals/jamadermatology/fullarticle/2779354