Two ER doctors saw it and they said it Bell's palsy; This is a spontaneous report from a contactable nurse. This nurse reported for a patient. The patient of an unspecified age and gender received BNT162B2 (Solution for injection, Lot number: unknown) via an unspecified route of administration on an unknown date, as a single dose for Covid-19 immunization. Medical history and concomitant medications were not reported. The patient stated that, she talked to Pfizer. She had to gone to ER on 06MAY2021. She woke up actually on the 04MAY2021 and she was going to go. She got up at 7 and was going to go to the grocery store. She got dressed and she was going to her brush teeth and everything. She looked in mirror and the right side of her face was flaccid and muscles weren't moving and she said her lips were numb. Right side of her face was flaccid: Attempted to clarify seriousness criteria with caller. She stated it was disfiguring initially then said it was disabling. She stated it was a slight improvement. When she got this she called online doctor visit where you talk to a doctor. She wanted to know if it was one of her medications that could cause this. Doctor said she take's Topamax because she has a very fine essential hand tremor so they wanted to try that in her right hand. MD said that if it was that medication they would stop it and in a few days it would go away and it persisted and her eye closed. Muscles weren't moving : treatment  On 06MAY2021 she went to the ER. She had her friend take her there. Two ER doctors saw it and they said it Bell's palsy. She has some other symptoms that have occurred about 2.5 to 3 weeks ago with the right side of your face she had severe pain. Severe pain: The pain was terrible it is ongoing. Her right forehead temporal all the way down the jaw line to her right ear. It is disabling you can't imagine. Why did she get this. The pain was still persisting day and night. Treatment - Her primary doctor ordered physical therapy she hasn't started treatment. Its not until 08JUN2021 she guesses they are going to do ultrasound she will get an evaluation with the ultrasound to see if they can reduce the inflammation to all those areas where her face isn't moving, the muscle. She thinks it is important to add that coffee or any liquids drips out of her mouth and onto her top. She has to bend over the kitchen table she can't chew her food on the right side and the food goes up to the gum line and doesn't go anywhere. The inside of her cheek muscles aren't moving. It was stated that on 06May2021, they diagnosed four other patients with Bell's palsy who received Pfizer. They did her medication they gave her prednisone 60 mg a day for a week. And the other one was acyclovir an anti-viral 1 gram 3 times a day for a week. The evet was medically significant. The patient was visited to emergency room. Vaccination Facility Type: Hospital. Prior Vaccinations patient did not take any other medication or vaccination within 4 weeks and No adverse events following prior vaccinations The outcome of the event of Bell's palsy was unknown.   Information on Lot/Batch number had been requested Follow-up attempts not completed; information about lot/batch number cannot be obtained. No further information expected.; Sender's Comments: Based on current information available event bell's palsy was considered related to suspect drug based on compatable temporal association and known safety profile of the drug.  The impact of this report on the benefit/risk profile of the Pfizer product is evaluated as part of Pfizer procedures for safety evaluation, including the review and analysis of aggregate data for adverse events. Any safety concern identified as part of this review, as well as any appropriate action in response, will be promptly notified to RAs, Ethics Committees, and Investigators, as appropriate.,Linked Report(s) : US-PFIZER INC-2021662119 same reporter/product/event, different patient