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Sarcoidosis-induced alopecia.
Nancy S House1, John P Welsh, Joseph C English
1Valley Dermatopathology and Department of Dermatology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.
Dermatology Online Journal
|September 6, 2012
Summary
Cutaneous sarcoidosis can cause scarring alopecia, mimicking other hair loss conditions. Histologic evaluation is crucial for diagnosis, especially if alopecia is the first symptom.
Area of Science:
- Dermatology
- Pathology
Background:
- Cutaneous sarcoidosis of the scalp can lead to scarring alopecia.
- This condition clinically resembles other primary cicatricial alopecias.
Observation:
- Histologic evaluation is essential for differentiating sarcoidosis-induced alopecia.
- Sarcoidosis is characterized by non-caseating granulomas.
Findings:
- Sarcoidosis-induced alopecia predominantly affects Black females aged 23-78.
- Most patients present with coexisting facial sarcoidosis, often with pulmonary and lymph node involvement.
Implications:
- Alopecia as an initial manifestation warrants systemic sarcoidosis evaluation.
- Early diagnosis and management of systemic sarcoidosis are critical.
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