Pain through whole body and tremoring; Pain through whole body and tremoring/ whole body was sore; Things started looking funny/ Funny feeling in her ears; Deaf and couldn't hear; Leg cramps in both legs and toes curled out/ muscle spasming; Dizzy; nauseous; Threw up twice; Bruise at injection site; This is a spontaneous report from a contactable nurse (patient). A 60-year-old female patient received the first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE) (Batch/lot number: EL3246) via an unspecified route of administration on the arm left on 05Jan2021 around 12:00 PM at single dose for COVID-19 immunization. The patient used to get legs cramps when she was pregnant with her twins, but it was only one leg. The patient stated she delivered six children, was in car accidents, and had surgeries. And the patient stated the pain from the COVID-19 Vaccine was beyond any other pain she has experienced. The patient needed glasses to read patient card. And stated her eyesight was going. The patient was pretty healthy. There were no concomitant medications. The patient had no prior vaccinations within 4 weeks. And the patient did not receive additional vaccines on same date that administered BNT162B2. The patient experienced deaf and couldn't hear on 06Jan2021 09:00, leg cramps in both legs and toes curled out on 05Jan2021 19:00, dizzy on 05Jan2021, nauseous on 05Jan2021, threw up twice on 05Jan2021, things started looking funny on 06Jan2021 09:00, pain through whole body and tremoring on 06Jan2021 10:00, bruise at injection site on Jan2021. All the events (except for event bruise at injection site) were reported as seriousness as life threatening. Clinical course: the patient worked nightshift. Laid down that afternoon to take a nap and got up around 10:00. Around 05Jan2021 19:00 PM had sever leg cramps in both legs where her toes were curled out. Leg cramps after vaccine wouldn't go away and it was in both legs. Just wouldn't go away. Around 05Jan2021 21:00 PM it went away. The patient was dizzy, nauseous, and threw up twice on the night of 05Jan2021, and going into 06Jan2021. The patient went to the couch in the hotel room and started going deaf. She couldn't hear anything on 06Jan2021 around 09: 00 AM. Things started looking funny on 06Jan2021 around 09: 00 AM. Woke up at 09:35. Hour after that there was pain through her whole body and everything was hurting at 10:00 AM on 06Jan2021. The patient was tremoring at 10:00 AM on 06Jan2021. Couldn't reach the phone to dial 9-11. Thought she was going to die. Last until about noon and then started to go away. Doesn't know if it is safe to take the second vaccine. Doesn't know if these are thing that should have happened to her. She started to get real concerned. Went into hotel room and started feeling dizzy again. Stopped haring things. Funny feeling in her ears. Was seeing things, got dizzy, and everything got dark. Everything lasted until 12:00 PM on 06Jan2021. Everything was good now. The patient had a bruise where injection was in Jan2021. Stated it was nothing compared to what she went through. Woke up around 10:00 AM. Then went back to sleep and got up around 18:00 PM. She felt fine. Her whole body was sore from the muscle spasming. The outcome of the event bruise at injection site was unknown, of the event leg cramps in both legs and toes curled out was recovered around 05Jan2021 21:00, the outcome of other remain events was recovered on 06Jan2021 12:00.  The reporter considered (method of assessment: Global Introspection) that all the events were related to BNT162B2.; Sender's Comments: All the reported events were possibly related to the first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE), due to temporal relationship. However, it is worth noting that the 60-year-old female patient had car accidents history and had surgeries. All the events started when she worked nightshift, including leg cramps in both legs and toes curled out, nauseous, threw up twice, pain through whole body, tremoring and transient deafness. Patient did not get rest after vaccination may a risk factor to the onset of the events.  The case will be reassessed should additional information become available.  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.