evidence: During a stroke, the face can droop on one or both sides. The eyelids and corners of the mouth may appear pulled down, and a person may be unable to smile or speak clearly. [...] Stroke can also cause other symptoms, - numbness or weakness on one side of the body - sudden confusion or difficulty understanding speech - sudden difficulty seeing in one or both eyes - sudden difficulty walking or loss of balance and coordination - a sudden, severe headache [...] Stroke’s facial symptoms include drooping, muscle weakness, and paralysis. A person’s eyelids, cheeks, or mouth may droop on one or both sides, and they may have an involuntary smile or be unable to smile intentionally. The drooping may also cause difficulty speaking.