since in the past her mom would get tired, the usual side effects; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP).  A 94-year-old female patient received BNT162b2 (BNT162B2), on 05Feb2021 as dose 1, single (Batch/Lot number: unknown) at the age of 93 years, on 26Feb2021 as dose 2, single (Batch/Lot number: unknown) and as dose 3 (booster), single (Batch/Lot number: unknown) for covid-19 immunisation. The patient's relevant medical history included: "COVID-19", start date: May2020 (unspecified if ongoing). There were no concomitant medications. The following information was reported: FATIGUE (non-serious), outcome "unknown", described as "since in the past her mom would get tired, the usual side effects". Relevant laboratory tests and procedures are available in the appropriate section.   Additional information: Other Conditions was no. Investigations was no. Expiry Date of Pfizer COVID-19 vaccine was UnknownOther Products was no. Consumer calling regarding her mom's reaction or what they think was a reaction after the second booster of COVID-19 vaccine. Caller says this was her mom's fourth dose altogether of the Pfizer COVID-19 vaccine, she had got her first two doses and then got her first and second booster doses. She says she would like to know if it had been reported before, which her mother is 94 years old, so she is absolutely not sure if it could be a reaction to the vaccine or not. Primary Care Provider: Reporter says that this provider did not give her mom the injection, it was administered by a company that came to the retirement community her mom lives at.Pfizer COVID-19 vaccine: Reporter says her mom just got her second booster dose yesterday. She says she doesn't have her mother's vaccine card to provide NDC/LOT/EXP for any of the four doses. She says she has the dates given for the first two vaccines. She says the first vaccine was given 05Feb2021 and the second one was 26Feb2021. She says it looks like she didn't write down the date of the third dose/first booster. Indication: Reporter says her mom got her Pfizer COVID-19 vaccines primarily because she is 94-year-old and lives in retirement group community. She says her mother was also diagnosed positive with COVID in May2020, before there was any vaccines, and the retirement community had isolated her. She says her mother had no symptoms; she was non-symptomatic.  She says she asked for a second test for her mother to confirm, and they said their policy was for a positive test for them to be isolated, so they took her mom to a hotel where they had a wing isolated from everything else, which was very traumatic for her mom, that isolation. She says her mom had tested positive in May2020, and her first vaccine dose was Feb2021. Reporter says that her mom said the only symptom she felt from the first time she was exposed to it, clarified to COVID-19 and not the vaccine, was that she slept most of the week. She says her mom was positive for COVID May2020 after she was probably exposed in Apr2020 or Mar2020 by a caregiver.AE: Reporter  says her mom's possible reaction is that she is 94 which sometimes she has word recall issues, but for the most part she is very much in the present. She says when she called her mom this morning, she said she had a dream that she was not sure was a dream, which in it she was running around her apartment saying she couldn't afford to pay for her funeral at this time, she was dead, and can't afford a funeral. Reporter says the time her mom was telling her this was after she was up to the bathroom at 05:00AM so between then and 07:00AM, and when her caregiver arrived at 07:00AM she said her mom was very much confused and was feeling like she was dead and couldn't pay for her funeral.She says this is not something that was recently discussed, and they can pay for her funeral, but they have never known her to disassociate from reality prior to this. She says her mother knows current events, goes to eat meals with the other residents, is active, and is involved in all kinds of activities, so this is not typical for her. She says when her mother's caregiver was there, she assured her she was fine, and told her she thought it would be best before she got washed up for the day if she had breakfast, and her caregiver made her oatmeal and she didn't go to the restaurant as usual, then ate half of that. Caller says the caregiver made sure to let her know things about the present like what day it is, that they were in her apartment, and her mom was fine and realized perhaps it was a dream.  Caller says she talked to her mom at 11:30 and she was still upset about it and said never happened before. Caller asks was that a side effect of the vaccine, since in the past her mom would get tired, the usual side effects, which she has also had all four, and there was nothing out of ordinary. She says what happened this morning, as her daughter and healthcare POA she has to look at it and is thinking she should find out has this been reported, confusion, since it is unlike anything seen prior to this. Concomitant Medications: Caller says that for the meds her mom takes, she takes none or nothing psychotropic or currently new, what she takes has been taken for a period of time. Caller says she just wanted to see if confusion has been reported before. She says she is going to call her mom again after this since she usually naps in afternoon and her caregiver will be by in the afternoon again because she needs help getting dressed and bathing. Caller clarifies that is normal for her, and that otherwise her mom is independent, she has bad rotator cuffs and that is the primary reason she needs help, they aren't going to do surgery at her age.  The information on the batch/lot number for BNT162b2 has been requested and will be submitted if and when received.