Convulsion that looked like seizures; Brain is on fire; Attacking her nervous system; Nerve twitches; Trouble walking; Trouble speaking; Finger tips getting numb increased; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP). The reporter is the parent.  A 21 year-old female patient received bnt162b2 (BNT162B2), administered in arm left, administration date 05Dec2021 (Batch/Lot number: unknown) at the age of 21 years as dose 2, single for covid-19 immunisation. The patient had no relevant medical history. There were no concomitant medications. Vaccination history included: Covid-19 vaccine (Dose: 1, Manufacturer Unknown, Lot number: Caller provides Pfizer FMWBO, but then states she is not sure as it is hard to read., Left arm both times), administration date: 15Nov2021, when the patient was 20 years old, for COVID-19 Immunization, reaction(s): "Finger tips getting numb".  The following information was reported: SEIZURE (hospitalization, medically significant) with onset Jan2022, outcome "unknown", described as "Convulsion that looked like seizures"; BRAIN INJURY (hospitalization, medically significant) with onset Jan2022, outcome "unknown", described as "Brain is on fire"; NERVOUS SYSTEM DISORDER (hospitalization) with onset Jan2022, outcome "unknown", described as "Attacking her nervous system"; MUSCLE TWITCHING (hospitalization) with onset Jan2022, outcome "unknown", described as "Nerve twitches"; GAIT DISTURBANCE (hospitalization) with onset Jan2022, outcome "unknown", described as "Trouble walking"; SPEECH DISORDER (hospitalization) with onset Jan2022, outcome "unknown", described as "Trouble speaking"; HYPOAESTHESIA (hospitalization) with onset Jan2022, outcome "not recovered", described as "Finger tips getting numb increased". The patient was hospitalized for seizure, brain injury, nervous system disorder, muscle twitching, gait disturbance, speech disorder, hypoaesthesia (start date: 23Feb2022, discharge date: 24Feb2022, hospitalization duration: 1 day(s)). The events "convulsion that looked like seizures", "brain is on fire", "attacking her nervous system", "nerve twitches", "trouble walking" and "trouble speaking" were evaluated at the emergency room visit. The event "finger tips getting numb increased" was evaluated at the physician office visit. The patient underwent the following laboratory tests and procedures: blood test: normal, notes: Several blood test; electroencephalogram: normal; investigation: normal, notes: Brain waves came back normal; magnetic resonance imaging: normal; urine analysis: normal. Reported was calling about the Covid for her daughter. Her daughter was having some side effects form it, she has been to the hospital several times. patient height was between 5 foot 4 inches and 5 foot 6 inches. HCP Information was declined to provide. Caller had not taken her daughter to see her primary care doctor. The finger tips getting numb was with the first dose and they didn't think anything about it and over looked it. After the second dose it was when other side effects started and the finger tips getting numb increased really bad. Caller was unable to provide specific date on when her daughter's finger tips were getting numb. The second dose was on 05Dec2021. Her daughter didn't start having side effects or didn't mention it to caller until the beginning of Jan2022. Caller stated that her daughter stayed over night or was admitted every time she went to the emergency room. Her daughter just came home this morning from (Hospital name withheld). Caller clarified that convulsion that looked like seizures was what caused her daughter to have to stay in the hospital. No additional vaccines administered on same date of the Pfizer suspect. No any other vaccinations within four weeks prior to the first administration date of the suspect vaccine(s) administered. Family medical history relevant to adverse events were not provided  The lot number for bnt162b2 was not provided and will be requested during follow up.