Pityriasis Lichenoides Questions & Answers

Updated: Sep 11, 2020
  • Author: Jeffrey P Callen, MD; Chief Editor: Dirk M Elston, MD  more...
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Questions & Answers

Overview

What is pityriasis lichenoides?

What is the pathophysiology of pityriasis lichenoides?

What causes pityriasis lichenoides?

What is the role of Epstein-Barr virus (EBV) in the etiology of pityriasis lichenoides?

What is the role of toxoplasmosis in the etiology of pityriasis lichenoides?

What is the role of HIV infection in the etiology of pityriasis lichenoides?

What is the role of infection in the etiology of pityriasis lichenoides?

What is the role of antitumor necrosis factor-? agents in the etiology of pityriasis lichenoides?

What is the prevalence of pityriasis lichenoides in the US?

What is TheraCal predilection of pityriasis lichenoides?

How does the prevalence of pityriasis lichenoides vary by sex?

In which age groups is pityriasis lichenoides most prevalent?

What is the prognosis of pityriasis lichenoides?

Presentation

What is the clinical history of pityriasis lichenoides?

Which physical findings are characteristic of pityriasis lichenoides?

What are the diagnostic criteria for febrile ulceronecrotic pityriasis lichenoides?

What are complications of pityriasis lichenoides?

DDX

Which conditions should be included in the differential diagnoses of pityriasis lichenoides?

What are the differential diagnoses for Pityriasis Lichenoides?

Workup

What is the role of lab studies in the workup of pityriasis lichenoides?

What is the role of biopsy in the workup of pityriasis lichenoides?

What is the role of T-cell gene rearrangement testing in the workup of pityriasis lichenoides?

Which histologic findings are characteristic of pityriasis lichenoides?

Treatment

What is included in medical care for pityriasis lichenoides?

What is the role of surgery in the treatment of pityriasis lichenoides?

How is pityriasis lichenoides prevented?

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

Medications

What is the role of phototherapy in the treatment of pityriasis lichenoides?

Which medications in the drug class Antimetabolites are used in the treatment of Pityriasis Lichenoides?

Which medications in the drug class Retinoids are used in the treatment of Pityriasis Lichenoides?

Which medications in the drug class Psoralens are used in the treatment of Pityriasis Lichenoides?

Which medications in the drug class Antibiotics are used in the treatment of Pityriasis Lichenoides?