Intradermal Acupuncture and Self-rehabilitation Program in Patients With Severe Bell's Palsy

Inclusion Criteria: * Patients diagnosed with Bell's palsy according to "Clinical Practice Guideline: Bell's Palsy" published by AAO-HNS in 2013; * First onset of Bell's palsy with only one side affected; * On the 10th day after the onset of palsy, HBGS score ranging from grade IV to VI; * According to the latest Chinese Guidelines for Bell's Palsy, within 72 hours of symptom onset for Bell's Palsy, oraling prednisolone 30mg qd for 5 days, followed by tapering to zero in decrements of 5 mg per day; * Adults aged 18 years of age or older (no limitation on gender). Exclusion Criteria: * Facial paralysis caused by acoustic neuroma, otitis media, mastoiditis, mumps, Hunter's syndrome, cranial base meningitis, intracranial metastasis of cancer or multiple sclerosis; * Fear of intradermal acupuncture; * allergy to adhesive tape; * Severe allergic diseases, significant skin lesions, tumors, and severe or unstable internal diseases involving the cardiovascular, respiratory, endocrine, digestive, or hematological system; * Cognitive impairment, mental illness, contagious disease, pregnant and lactating; * Previously treated withintradermal acupuncture or participating in other clinical trial within 3 months.