key: cord-0714356-ldy82kl5
authors: Demir, Betul; Cicek, Demet; Turkoglu, Sedatcan; Bozdemir, Neslihan Yuksel; Sarikurt, Furkan; Banoglu, Erden
title: Wood's lamp examination of hair and nails related to COVID‐19 treatment
date: 2021-11-01
journal: Dermatol Ther
DOI: 10.1111/dth.15174
sha: ac4973d1dacc7aa62f37e15fe1090149093ea006
doc_id: 714356
cord_uid: ldy82kl5

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effects of the various drugs used in the treatment of COVID-19 are acute generalized pustular eruptions, morbiliform drug eruptions, vasculitis, DRESS syndrome, and urticarial vasculitis. 3 Animal studies have reported a yellow discoloration of the claws, fur, and pads under pale UV light. 4 The drug concentrations that the patient has exposed can be detected for months after drug administration by toxicological analysis of hair and nail matrix. It is difficult to detect the drug simultaneously both in the hair and nails. 9 No nail and hair samples could be taken from the patients, since it is an invasive method and due to cosmetic concerns.

The distal part of the patient 3's fingernail was sampled, in which no favipiravir could be detected in a toxicological examination, although it was believed an analysis of more samples could change this. The current study was published to support other previously published studies.

The authors thank NOVA translation company for language translation and Mr. Ramazan Cakmak for photo corrections.

The authors declare no potential conflict of interest.

Analysis of patient data, writing the manuscript and making revisions: 

Written consent was obtained from all patients prior to this submission.

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