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| Fig. 13.5 A, Acquired ichthyosis in a patient with sarcoidosis. B, Patient with Löfgren’s syndrome demonstrating tender red subcutaneous lesions characteristic of erythema nodosum. |
The most common nonspecific cutaneous lesion is erythema nodosum, which may be present in 13% to 20% of patients. Clinically and histologically, it is identical to erythema nodosum associated with other conditions. Less common nonspecific cutaneous lesions include acquired ichthyosis (Fig. 13-5A), calcinosis cutis, erythema multiforme, and nail clubbing.
