Febrile ulceronecrotic Mucha-Habermann's disease

Area of Science:

• Dermatology
• Pathology
• Internal Medicine

Background:

• Febrile ulceronecrotic Mucha-Habermann's disease is a rare and severe variant of pityriasis lichenoides et varioliformis acuta.
• Characterized by systemic symptoms and extensive necrotic skin lesions.

Observation:

• A patient presented with classic features of febrile ulceronecrotic Mucha-Habermann's disease.
• The patient exhibited a polymorphous eruption, large ulceronecrotic skin lesions, high fever, and constitutional symptoms.
• Notably, this patient also presented with malabsorption and eosinophilia, which are not typical findings.

Findings:

• Histopathologic examination confirmed Mucha-Habermann's disease.
• The co-occurrence of malabsorption and eosinophilia in this severe dermatosis is a unique observation.
• This presentation expands the known clinical spectrum of the disease.

Implications:

• The findings suggest that febrile ulceronecrotic Mucha-Habermann's disease may be a hypersensitivity reaction.
• Further research is warranted to understand the pathomechanisms, especially the role of hypersensitivity.
• This case highlights the importance of considering systemic involvement and atypical symptoms in rare dermatological conditions.