Which of the following symptoms might indicate a stroke?

A sudden severe headache is a classic symptom that may indicate a stroke, particularly in the case of a hemorrhagic stroke. This type of stroke occurs when a blood vessel in the brain bursts, leading to bleeding that can cause intense pain. Such headaches are often described as a "thunderclap" headache, meaning they come on suddenly and are extremely intense. Other symptoms of a stroke can include weakness or numbness on one side of the body, difficulty speaking, and confusion, but the sudden severe headache is significant and can serve as a warning sign that immediate medical intervention is necessary.

In contrast, shortness of breath, a persistent cough, and a high fever are not common indicators of a stroke. These symptoms may relate to other medical conditions, but they do not specifically point towards a cerebral event like a stroke. Recognizing the signs of a stroke, including the presence of a severe headache, is crucial for prompt treatment and better outcomes.