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Subacute cutaneous lupus erythematosus presenting with generalized poikiloderma
K Pramatarov1, S Vassileva, L Miteva
1Department of Dermatology and Venereology, Alexander's University Hospital, Sofia Faculty of Medicine, Sofia, Bulgaria.
Journal of the American Academy of Dermatology
|January 22, 2000
Summary
This study reports a rare case of poikiloderma, a skin condition, developing in a patient with subacute cutaneous lupus erythematosus (SCLE). Photosensitivity, a known SCLE factor, may explain this unusual presentation.
Area of Science:
- Dermatology
- Immunology
- Autoimmune Diseases
Background:
- Subacute cutaneous lupus erythematosus (SCLE) is an autoimmune condition primarily affecting sun-exposed skin.
- SCLE is characterized by specific autoantibodies and characteristic histological findings.
- Photosensitivity is a key feature and potential trigger for SCLE flares.
Observation:
- A 64-year-old woman presented with progressive generalized poikiloderma.
- The poikiloderma developed four years after a significant sunburn episode.
- This clinical presentation is unusual within the known spectrum of SCLE.
Findings:
- Diagnosis of SCLE was confirmed through serological markers (antinuclear antibodies, anti-Ro/SS-A antibodies).
- Histopathological examination and direct immunofluorescence supported the SCLE diagnosis.
- Specific findings included a positive lupus band test and "dust-like" epidermal IgG staining.
Implications:
- Poikiloderma is identified as a previously unreported clinical manifestation of SCLE.
- The photosensitivity inherent to SCLE may be the underlying pathomechanism for this rare presentation.
- This finding expands the understanding of SCLE's diverse clinical spectrum and potential sequelae.