evidence: For example, if the eye on your paralyzed side is watering or you have sensitive hearing or ringing in your ear, it's likely Bell's palsy. Changes in your sense of taste are also signs of Bell’s palsy. But if you feel numbness or weakness in your arms or legs on one side of your body, it could be a stroke. With Bell’s palsy, you shouldn’t feel weak or have trouble moving your tongue. [...] Bell's palsy is when you suddenly have weak or paralyzed muscles on one side of your face. It usually causes a drooping mouth, eyebrow, and eyelid. But it's not serious and usually clears up without any type of treatment in a few months.