What is included in long-term monitoring of patients with pityriasis lichenoides?

Updated: Sep 11, 2020
  • Author: Jeffrey P Callen, MD; Chief Editor: Dirk M Elston, MD  more...
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Patients with a waxing and waning course of Mucha-Habermann disease require follow-up monitoring and additional treatment depending on the severity of the disease.

The exact etiology of pityriasis lichenoides has yet to be elucidated; a relationship with mycosis fungoides and lymphomatoid papulosis has been proposed based on the overlap of clinical, histologic, and immunohistochemical findings. [44] Although most cases of pityriasis lichenoides are self-limited, patients exhibiting a prolonged or atypical course warrant continued follow up and serial tissue sampling as clinically indicated.

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