The correct answer is Knuckle pads which are benign, asymptomatic, well-circumscribed, smooth, firm, skin-colored papules, nodules, or plaques, located in the skin over the dorsal aspects of the metacarpophalangeal (MCP) and interphalangeal (IP) joints N.B >Knuckle pads may be idiopathic, genetic, acquired as a response to repetitive trauma, or associated with several other acquired conditions.
