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Pityriasis Lichenoides

Self-limiting papulosquamous skin disorder with acute and chronic forms (PLEVA and PLC).

Written by: Saygı Hospital Health Guide Editorial Board
Published:

This content is for general information; please consult your physician for diagnosis and treatment.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Dermatoloji department. Book Appointment →

What is Pityriasis Lichenoides?

Pityriasis lichenoides is an uncommon idiopathic skin disorder considered a T-cell mediated reaction, possibly related to infection or drug exposure.

It exists on a spectrum from pityriasis lichenoides et varioliformis acuta (PLEVA, Mucha-Habermann disease) — abrupt crops of erythematous papules that become hemorrhagic, necrotic and crusted — to pityriasis lichenoides chronica (PLC) with persistent reddish-brown scaly papules. A rare febrile ulceronecrotic Mucha-Habermann variant is severe.

Diagnosis is clinical, supported by skin biopsy showing parakeratosis, lymphocytic vasculitis (PLEVA) or interface dermatitis (PLC). Cutaneous T-cell lymphoma must be excluded in atypical chronic cases.

Symptoms

PLEVA: crops of erythematous papules with central necrosis and crust
Lesions at different stages (polymorphic) on trunk and extremities
Healing with hypopigmented or pigmented scars
PLC: persistent reddish-brown papules with mica-like scale
Mild itch or burning
Mucha-Habermann ulceronecrotic: fever, large necrotic plaques, systemic symptoms
Recurrent flares over months to years

Risk Factors

Recent viral or bacterial infection
Drug exposure (rare trigger)
Children and young adults most often affected
Possible association with cutaneous T-cell lymphoma in chronic cases
Immune dysregulation

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • New crops of papules with crusts
  • Persistent scaly rash without diagnosis
  • Lesions resembling chickenpox in adults
  • Fever with widespread necrotic skin lesions
  • Suspicion of lymphoma
  • Failure to respond to standard therapy
  • Scarring concerns

Treatment Methods

01
Topical steroids for inflammation and pruritus
02
Oral antibiotics (tetracyclines, erythromycin) — anti-inflammatory effect
03
Phototherapy (NB-UVB or PUVA) for extensive disease
04
Methotrexate for refractory or febrile ulceronecrotic forms
05
Cyclosporine in severe cases
06
Sun protection and skin moisturization
07
Long-term monitoring for cutaneous lymphoma

Which Department to Visit?

You can visit our Dermatoloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

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Let us help you

You can make an appointment with our specialists or contact us for your concerns.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.