What is a common symptom of a stroke?

Weakness in one extremity is a hallmark symptom of a stroke, primarily because strokes can affect the brain's ability to control muscles and movement. When blood flow to a part of the brain is interrupted, either by a blockage (ischemic stroke) or bleeding (hemorrhagic stroke), the affected area can lead to decreased function in the corresponding part of the body. This is commonly observed as weakness or paralysis in one side of the body, which may manifest as difficulty in raising an arm or leg or inability to use one side effectively. This unilateral weakness is often one of the first signs that prompt evaluation for a possible stroke.

The other options, while they can occur in certain situations, are not primary or common indicators of a stroke. Increased appetite, headaches, and a persistent cough do not directly correlate with the neurological deficits typically associated with a stroke, making weakness in one extremity a clearer and more definitive symptom to recognize.