Early warning signs of stroke: 1. Sudden numbness and weakness of the face, arms or legs, especially when the body is on the side 2. Sudden impairment of speech or comprehension 3. Sudden impairment of vision in one or both eyes 4. Sudden difficulty in walking, dizziness or balance 5. Sudden onset of severe headache of unknown origin It is important to identify and recognize these early warning signs as warning signs of impending stroke and it is important to get to a hospital as soon as possible.