A patient reports weakness of the extremities and diplopia. The nurse knows that these symptoms are characteristic of which condition?

The correct answer is A: Myasthenia gravis (MG). Weakness of extremities and diplopia are classic symptoms of MG, an autoimmune neuromuscular disorder affecting communication between nerves and muscles. This leads to muscle weakness and fatigue, causing symptoms like weakness and double vision. MS (B) typically presents with symptoms related to the central nervous system, such as numbness, tingling, and visual disturbances. CP (C) is a non-progressive motor disability present from birth. PD (D) primarily affects motor function, leading to tremors, stiffness, and slowness of movement.