occipital neuralgia; left-side Bells Palsy; bilateral headache; This is a spontaneous report from a contactable physician (patient). A 65-year-old male patient received BNT162b2 (Lot/batch number and Expiration date were not provided), via an unspecified route of administration at right deltoid on 21Dec2020 19:00 at single dose for covid-19 immunization. The patient's medical history included low high density lipoprotein (HDL). There were no concomitant medications. The patient previously took influenza vaccine (longer than 4 weeks ago, and he did not have any reaction), pravastatin for low HDL. Reported 2 days ago (02Jan2021) he developed a bilateral headache. He stated he was asymptomatic until then. He said he now has Bells Palsy on 02Jan2021, clarified he has left-side Bells Palsy. He said it is unknown to him if the bilateral headache and Bells Palsy are related to taking the COVID-19 Vaccine. He stated he started wearing a N95 mask for the past 2 weeks. He said the N95 mask is very tight on the back of his head. He said he believes he is experiencing occipital neuralgia caused by wearing the N95 mask. He said studies show that the N95 mask can cause Bells Palsy, and the N95 mask maybe a confounding factor. He stated he doesn't have any further information on the N95 mask he was using. Initially he had a severe headache and administered to himself a sphenopalatine block of Lidocaine 1% in his nose. He stated being an ER doctor, he knows how to administer the sphenopalatine block to a patient. He went to the ER on 03Jan2021 to make sure he did not have a tumor or a stroke. He said the hospital performed a CT of his head, a MRA, labs, and a COVID-19 test (clarified as a PCR COVID-19 test) with a full viral count. He said all the tests were negative. His wife noticed his Bells Palsy yesterday, 03Jan2021. He said he thinks the Bells Palsy started the night before on 02Jan2021. He said he noticed on the night of 02Jan2021 when he was brushing his teeth, he hit a tooth on that side (clarified as left side) of his mouth with his tooth brush. He hasn't started taking steroids yet, but will be starting steroids real soon. He clarified his doctor prescribed a Medrol dose pack and Valtrex for the Bells Palsy. He stated he has not started the Medrol dose pack and Valtrex. He is ordering Lidocaine 1% viscous for himself, so he can do an internasal sphenopalatine block on himself. He does not know if the bilateral headache and Bells Palsy were caused by taking the COVID-19 Vaccine. The events required Emergency Room visit. The outcome of the event Bell's palsy was not recovered,  Headache was recovering, Occipital neuralgia was unknown.  Information on the Lot/Batch number has been requested.; Sender's Comments: A possible causal association between administration of BNT162b2 and the onset of Bell's palsy/Headache might not be excluded, considering the plausible temporal relationship.  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 Regulatory Authorities, Ethics Committees and Investigators, as appropriate.