A patient with sarcoidosis has firm,tender,reddened nodules,along the anterior aspect of the leg.These lesions are called:

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Erythema nodosum is a common skin manifestation in sarcoidosis, presenting as firm, tender, reddened nodules along the anterior aspect of the leg. Erythema multiforme is characterized by target-shaped lesions and is not associated with sarcoidosis, while a discoid rash is a characteristic rash in systemic lupus erythematosus. Lichen planus presents as itchy, flat-topped, polygonal purple papules and is not associated with sarcoidosis. Therefore, erythema nodosum is the best choice for this presentation.

A Patient with Sarcoidosis Has Firm,tender,reddened Nodules,along the Anterior Aspect