What symptom might indicate a potential stroke when presented suddenly?

Slurred speech is a key symptom that can indicate a potential stroke when it occurs suddenly. This symptom arises due to a disruption in the brain's ability to communicate effectively, often caused by a lack of blood flow to areas of the brain responsible for speech. Sudden onset slurred speech, combined with other symptoms such as weakness, trouble walking, or facial drooping, can suggest that a stroke is happening and requires immediate medical attention.

The other options, while they may reflect various health issues, do not specifically correlate with the acute presentation of a stroke. Increased appetite is not associated with stroke symptoms; it may indicate a different health concern, such as metabolic changes or dietary habits. A persistent cough could point to respiratory conditions or infections but is not a typical indicator of stroke. Itching skin is generally linked to dermatological conditions or allergic reactions and does not relate to the neurological deficits associated with stroke. These contextual distinctions highlight the importance of recognizing sudden neurological changes like slurred speech as urgent signs that necessitate further evaluation and intervention.