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Leukocytoclastic vasculitis caused by drug additives
M D Lowry1, C F Hudson, J P Callen
1University of Louisville School of Medicine, Department of Medicine, KY.
Journal of the American Academy of Dermatology
|May 1, 1994
Summary
Chronic cutaneous small vessel vasculitis (LCV) can be triggered by medications or infections. This study identifies a dye in lithium carbonate capsules as a potential cause of LCV, with food dyes exacerbating symptoms.
Area of Science:
- Immunology
- Dermatology
- Toxicology
Background:
- Chronic cutaneous small vessel vasculitis (LCV) is linked to immune complex deposition.
- Common LCV triggers include medications, infections, and autoimmune disorders.
- Food additives are rarely implicated in LCV etiology.
Observation:
- A patient with chronic cutaneous LCV was observed.
- The patient was taking lithium carbonate capsules.
- The LCV symptoms correlated with capsule excipient exposure.
Findings:
- A specific dye used as an excipient in lithium carbonate capsules was identified as the presumed cause of LCV.
- Ingestion of food dyes was found to trigger disease flares in the patient.
- This case highlights a novel association between pharmaceutical dyes and LCV.
Implications:
- Pharmaceutical excipients, specifically dyes, should be considered in the differential diagnosis of LCV.
- Further research is warranted to investigate the role of dyes in vasculitis.
- Patients with LCV may benefit from avoiding certain food dyes and medications containing specific excipients.