Sir,

This letter is in response to the article, "A clinical and histopathological study of pityriasis lichenoides" by Nair PS. [1] The author mentions that basal cell vacuolization and perivascular infiltrate were parameters considered mandatory for the histological diagnosis of pityriasis lichenoides. Thus, cases clinically diagnosed as pityriasis lichenoides et varioliformis acuta (PLEVA)/pityriasis lichenoides chronica (PLC) but not having basal cell vacuolization and perivascular infiltrate were excluded from the study. It would be interesting to know the percentage of such patients because in practice, many cases that are clinically diagnosed as PLC do not always show basal cell ...

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