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  2. Bell's palsy - Symptoms and causes - Mayo Clinic

    • Bell's palsy is a condition that causes sudden weakness in the muscles on one side of the face. Often the weakness is short-term and improves over weeks. The weakness makes half of the face appear to droo… See more

    Symptoms

    Symptoms of Bell's palsy come on suddenly and may include: 1. Mild weakness to total paralysis on one side of the face — occurring within hours to days. 2. Facial dr… See more

    Mayo Clinic
    Causes

    Although the exact reason Bell's palsy occurs isn't clear, it's often related to having a … See more

    Mayo Clinic
    Risk Factors

    Bell's palsy occurs more often in people who: 1. Are pregnant, especially during the third trimester, or who are in the first week after giving birth. 2. Have an upper respiratory … See more

    Mayo Clinic
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