1. Vision Problems: Blurry or partial vision loss, as well as a narrower field of view, can indicate damage to the visual center of the brain. 

2. Sudden Dizziness and Headaches: Individuals with hypertension should pay attention to sudden dizziness and headaches, as these can be early signs of a stroke.

3. Mobility Issues: Before a stroke, patients may experience weakness or lack of flexibility in their upper limbs, as well as numbness or difficulty moving on one side of the body.  

4. Language Problems: Strokes can affect the brain's language center, resulting in difficulty speaking and understanding others.

5. Sleepiness and Drowsiness: Blocked or narrowed arteries in the brain during a stroke can reduce oxygen supply, leading to excessive yawning and difficulty concentrating.