Which of the following is a common sign of a stroke?

Sudden numbness or weakness, confusion, trouble speaking or understanding, and difficulty seeing in one or both eyes are all hallmark signs of a stroke. These symptoms occur because a stroke typically disrupts the blood supply to specific areas of the brain, resulting in impaired function.

Specifically, sudden numbness or weakness often presents on one side of the body, indicating which hemisphere of the brain is affected. Confusion and difficulty speaking can arise if the stroke impacts areas responsible for language comprehension and production. Vision issues can also occur if the stroke affects parts of the brain that process visual information. Recognizing these symptoms is crucial, as prompt medical attention can significantly impact recovery outcomes.

In contrast, sudden hair loss, permanent facial discoloration, and chronic fatigue are not recognized signs of a stroke, as they do not directly relate to the acute neurological deficits that characterize a stroke. Thus, option C clearly aligns with the established clinical understanding of stroke symptoms.