2020, Number 1
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Dermatología Cosmética, Médica y Quirúrgica 2020; 18 (1)
Pityriasis rubra pilaris: a review
Mancilla-Gudiel PM, Arenas R
Language: Spanish
References: 28
Page: 53-61
PDF size: 307.08 Kb.
ABSTRACT
Pityriasis rubra pilaris (PRP) is a rare disease of unknown etiology
that occurs in the first, second and sixth decades of life.
The clinical characteristics are very variable, but in general, it
presents erythematous follicular papules and salmon squamous
plaques that come together and leave patches of unaffected
skin, which is a very distinctive feature of this disease; PRP is
often associated with palmoplantar keratoderma. Dermoscopy
supports the clinical evaluation and makes possible the distinction
with the most common differential diagnosis, psoriasis. The
diagnosis is clinical and is confirmed by histopathological findings
like the “chessboard” pattern, typical of PRP, although it is
not pathognomonic. Topical treatments are the basis of management
systemic medications and should be added in severe
cases. Systemic retinoids are considered first-line treatment,
methotrexate as second-line, and due to their high costs and
still limited clinical evidence, biological agents have been left as
the third line of treatment. To date, all the available medications
used to treat this disease is based on case reports or series
of published clinical cases.
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