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[Perforating folliculitis. Case report and differential diagnosis]
K Adamicová1, Z Fetisovavá, D Výbohová
1Ustav patologickej anatómie, Jesseniova lekárska fakulta v Martine, Univerzita Komenského v Bratislave. adamicova@jfmed.uniba.sk
Ceskoslovenska Patologie
|September 22, 2009
Summary
A rare skin condition, perforating folliculitis, presented as a disseminated rash in a patient undergoing alcohol abuse treatment. Histopathology confirmed the diagnosis, distinguishing it from pityriasis lichenoides.
Area of Science:
- Dermatology
- Histopathology
Background:
- A 26-year-old woman developed a widespread papular rash during treatment for alcohol abuse.
- The condition progressed over nine weeks, initially suspected as pityriasis lichenoides.
Observation:
- Skin biopsy revealed enlarged hair follicles filled with keratin and parakeratosis.
- Inflammatory cells, fragmented collagen, and focal epithelial perforations were noted.
- Hair follicles showed severe disruption, surrounded by giant cell infiltrates.
Findings:
- Histopathological analysis identified cystical enlargement of hair follicles with keratinous and parakeratotic masses.
- Focal perforations of the infundibular epithelium draining cellular debris were prominent features.
- The presence of giant cell inflammatory infiltrate engulfing severely disturbed follicles confirmed the diagnosis.
Implications:
- The case was diagnosed as perforating folliculitis, a distinct entity within the perforating dermatoses.
- This highlights the importance of detailed histopathological examination for accurate diagnosis of rare skin conditions.
- Understanding perforating folliculitis aids in differentiating it from similar dermatological presentations.
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