Not sleeping well at night due to pressure feeling in her chest up; Not sleeping well at night due to pressure feeling in her chest up; shivers; jaw got paralyzed; she got shaky; feeling bad/ brain fog; burning sensation in her body; She couldn't talk; slight elevated temp (99.7F max); She has been off balance this week since getting her vaccine; This is a spontaneous report from a contactable physician. A 17-year-old female patient received BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE), via an unspecified route of administration on 12Apr2021 (batch/lot number was not reported) as a single dose for COVID-19 immunisation. Medical history included irritable bowel syndrome, panic attacks, migraines and acne. The patient was not pregnant at the time of vaccination. It was unknown if there were other vaccines in four weeks. The patient did not have Covid prior to vaccination and was not Covid tested post vaccination. Concomitant medications in two weeks included ondansetron hydrochloride (ZOFRAN) taken for anti-nausea, start and stop date were not reported; doxycycline taken for acne, start and stop date were not reported. The patient previously took glycerol (GLYCERIN) and experienced allergies. The patient got her vaccine on 12Apr2021. Two nights after her vaccine (14Apr2021), she got shaky and feeling bad and burning sensation in her body. No fever at that time, but slight elevated temp (99.7F max) the day after the vaccine (13Apr2021). Mother gave her anti-nausea medication (ondansetron hydrochloride 2 mg) and within 5 minutes her jaw got paralyzed. She couldn't talk. It lasted about 30 min. Mother called ambulance and patient was brought to ER. ER didn't do bloodwork or any evaluation. ER didn't know what happened per mother. She has been off balance this week since getting her vaccine (Apr2021). She feels better this morning but she still feels off balance. Not sleeping well at night due to pressure feeling in her chest up and she shivers to get the feeling away per patient (unspecified date). Slept better last night as of 17Apr2021. No facial drooping. She can smile and lift her eyebrows. Patient had "brain fog" this week as well after the vaccine. The adverse events "she got shaky", "feeling bad", "burning sensation in her body", "jaw got paralyzed" and "she couldn't talk" resulted in doctor or other healthcare professional office/clinic visit and emergency room/department or urgent care visit. There was no treatment received for the adverse events. The outcome was recovered on an unspecified date for the events "jaw got paralyzed" and "she couldn't talk"; recovering for the event "not sleeping well at night"; not recovered for the event "off balance"; and unknown for the rest of the events.  Information on the lot/batch number has been requested.; Sender's Comments: Based from temporal relation of event and vaccine administration, Trismus as an event in relation to suspected drug BNT162B2 cannot be totally excluded.  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