LUPUS ERYTHEMATOSUS
LUPUS ERYTHEMATOSUS (See also Section 14) ICD-10: M32.9
• Mucosal involvement occurs in approximately 25% of those with chronic cutaneous lupus erythematosus.
• Findings: Lesions: painless erythematous patches to chronic plaques, sharply marginated, irregularly scalloped white borders, radiating white striae, and telangiectasia. In older lesions: Central depression, and painful ulceration.
• Distribution: Buccal mucosa; palate (Fig. 33-28), alveolar process, tongue. Chronic plaques may also appear on the vermilion border of the lips.
• In acute systemic lupus erythematosus, ulcers arise in purpuric necrotic lesions of the palate (80%), buccal mucosa, or gums.
FIGURE 33-28 • Lupus erythematosus: Hard palate Erythematous eroded plaques were associated with chronic cutaneous LE.