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https://doi.org/10.1111/phpp.12824
Copy DOIPublication Date: Aug 9, 2022 | |
Citations: 3 |
PUVA phototherapy is indicated for various dermatological conditions. Adverse events due to PUVA phototherapy are seen in a sizable number of patients and can result in therapy cessation. This review will focus on PUVA pricks, an adverse event first reported by Tegner in 1979. Articles were retrieved from PubMed starting from January 1979 until February 2021 yielding 1228 unique articles. Articles were included when they described individual patient characteristics, and patients were treated with PUVA therapy. After screening, 33 patients were extracted from 9 articles, published between 1979 and 2005. PUVA pricks are paroxysmal episodes of burning or prickling pain, akin to peripheral neuropathy of the unmyelinated C-fibers. Increased excitability of TRPV1 and TRPA1 channels while under PUVA therapy might be a contributing factor. Effective topical treatment options for PUVA pricks are capsaicin 8% cream, urea 4%, or petrolatum emollients. Antiepileptics such as phenytoin, clonazepam, and gabapentin are acceptable oral treatment options. A possible role of N-acetylcysteine in the prevention of PUVA pricks is discussed, though further research is required.
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