Signs and symptoms of Bell's palsy come on suddenly and may include: Rapid onset of mild weakness to total paralysis on one side of your face — occurring within hours to days Facial droop and difficulty making facial expressions, such as closing your eye or smiling Drooling Pain around the jaw or in or behind your ear on the affected side Increased sensitivity to sound on the affected side Headache A loss of taste Changes in the amount of tears and saliva you produce