sleeping longer than normal; Wobbly; tired; weak; confusion; headache; This is a spontaneous report from a contactable consumer or other non-hcp. A 92-year-old female patient received BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Formulation: solution for injection; Batch/Lot Number: Unknown, Expiration date: Unknown) via an unspecified route of administration (age at vaccination 92-year) in left arm (left upper arm) on 17Feb2021 at 11:04 as dose number unknown, single for COVID-19 immunization. Medical history included ongoing arthritis, and ongoing dementia. Concomitant medications included celecoxib (200mg tablet one in morning by mouth); donepezil (10mg tablet by mouth one time a day at night); both taken for an unspecified indication from an unspecified start date and ongoing. Reported additional information for concomitant products Celecoxib; Donepezil: She does not know if she was taking this for memory or pain. No prior vaccinations (within 4 weeks) were reported. On 17Feb2021 the patient experienced headache; on 18Feb2021 the patient experienced tired, weak, confusion; on an unspecified date the patient experienced sleeping longer than normal, wobbly. Adverse events did not require a visit to emergency room/physician office. The patient was not hospitalized for the adverse events. Therapeutic measures were taken as a result of the adverse events. Seriousness of the events was reported as non-serious. It was reported that "reporter calling about mom, she received Pfizer Covid shot yesterday, she's 92 years old. Caller stated she was but did not finish her sentence. Caller wanted to be sure that she doesn't have to take her to emergency. Patient was very tired, weak, a little confused, slight headache yesterday, but she does get headaches sometimes, caller was not too worried about that. Asks if she should be concerned. Caller was her mother's caregiver; she wanted to make sure she doesn't need to do anything more for her. Patient was not scheduled for second Covid 19 vaccine. When querying start of patient being very tired caller reports it appeared after she woke up this morning. Caller reports patient was sleeping longer than normal, patient usually gets up around 10:00AM or 10:30AM, caller checked on her around quarter to 11:00AM, caller stated patient was confused, sleepy, tired and wobbly. She was wobbly but not like she was today. She had been in bed ever since she was lying down, says she feels ok. When she sits up, she was not herself. Caller reported the patient does have dementia and had arthritis. Caller states she was confused with her dementia. The arthritis was mild, not severe, no cotorsion, her whole left side, does have arthritis. Patients' headache was not a major thing and reports it was gone. Caller was taking an Ensure to her mom prior to retrieving the Covid 19 vaccine card for information. Caller wanted to make sure her mother had something to drink. She had given her mother something earlier, but she didn't drink it. Caller reported her mother was pretty much with her every day. Her mother's memory was not good anyway because of dementia, caller stated some things she's going to have anyway, caller wanted to make sure nothing else was going on. Caller reports level of confusion was different today. When querying treatment caller reported her mother takes Tylenol Arthritis each night and morning. Clarifies it was Tylenol Arthritis 8-hour 650mg two by mouth at night per her doctor. Caller provided expiration Aug2023." The clinical outcome of the event "headache" was resolved on an unspecified date in Feb2021; outcome of the events "tired, weak, confusion" was not resolved; while the outcome of other events was unknown.  No follow-up attempts are possible. No further information is expected.