Behind her ears felt swollen and it was painful to chew/the pain is so bad behind my ears and my side of my face; Behind her ears felt swollen and it was painful to chew/the pain is so bad behind my ears and my side of my face; I tried to chew and it was husting me to chew; I got the soreness; I tried to chew and it was husting me to chew; Behind her ears felt swollen and it was painful to chew/the pain is so bad behind my ears and my side of my face; This is a spontaneous report from a contactable consumer or other non health care professional via a Pfizer Sponsored Program. (Patient, reported to self). A 72-years-old female patient received first dose of BNT162B2 (PFIZER-BIONTECH mRNA COVID-19 VACCINE, Formulation: solution for injection, Lot number/ Batch/lot number: EL324  and Expiration date: UNKNOWN), via unspecified route of administration on 03Feb2021 (Age at vaccination: 72 years) as dose 1, single for COVID-19 immunisation. The patient medical history and concomitant medications were not reported. Reporter stated that, behind her ears felt swollen and it was painful to chew, Reporter had a dental appointment today for a cleaning and needs to take an antibiotic 1 hour before dental procedures and was wondering if it would be okay to keep appointment, Reporter clarified that dental appointment was scheduled the same day as vaccine but then was rescheduled. Reporter stated, "I am calling because I read the side effects on paper, and I understand the side effects on the paper, so I did not get them until like, I had it on 3rd had it done, and then on Saturday I tried to chew and it was husting me to chew and it was hurting from behind my ears, are those what you call lymph area or is that just something that goes on with the side effects". Reporter was informed about Pfizer medical information. Reporter stated, "So I have to hold again because one of my question is this, I have a dental appointment today even though I got the soreness, I wanted to know if that would be alright because I have to get Clindamycin before I go, so Is that advised for me to get my dental appointment even though I am having pain in my ears and my jaw." Reporter stated, she was calling because the "pain is so bad behind my ears and my side of my face, so I guess that is why I was calling." "I would love someone to do a follow up this, that was my first vaccine and I got to take the second one, I would love it." Prescribing Healthcare Professional Info: consumer stated, "(Institute Name)" Regarding the lot number the reported stated, there was a number after Pfizer says EL324 and something else that I can't read, there is something else but can't read what that is, stated that "On this card this just telling me, my next appointment date I had it down on 03Feb2021, and that was just my first dosage and I go for my second dosage on 25Feb2021." Indication: reporter stated, "because I am 65 years and older." As the reporter hung up the call abruptly, limited information available. Reporter stated she can chew better now. The outcome of event, "she tried to chew and it was husting her to chew" was recovering. The outcome of the rest of the events were unknown.  Information on the lot/batch number has been requested.   Follow-up (08Feb2021): follow-up spontaneous report from a contactable consumer received.  Follow-up (13May2021): Follow-up attempts completed. No further information expected.