well circumscribed, raised, coin shaped lesions ranging from 4 to 10 cm or more in diameter
usually symmetrical affecting the extensor surfaces of limbs (especially in older patients) and dorsal aspects of hands and feet (especially in younger patients); occasionally, they occur on nail folds causing ridging; rarely, the face
usually subacute with erythema, mild oedema, and in some cases, vesiculation; scaling and lichenification in more chronic cases
surface may be moist and secondary infection is common
pruritus is variable
lesions usually persist for many months, fade spontaneously, then relapse. In older patients the rash tends to be more persistent.
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