began to hallucinate; Dizzy; bed nightmare; This is a spontaneous report from a contactable consumer.  A 79-year-old female patient received the second dose of the bnt162b2 (PFIZER-BIONTECH COVID-19 MRNA VACCINE Expiration Date: May2021), via an unspecified route of administration on 31Jan2021 at 79-years-old at a single dose for COVID-19 immunization.  Medical history included high blood pressure from an unknown date and unknown if ongoing, shrunk a little from an unknown date and unknown if ongoing ("about 5'9 and I was always 5'10 but I think I shrunk a little").  Concomitant medications included nebivolol hydrochloride (BYSTOLIC) taken for blood pressure high from an unspecified date to an unspecified date ("I have blood pressure, high blood pressure. I am taking a blood thinner. I was taking the other one, but they told me to look the other one (BYSTOLIC). It (BYSTOLIC) is a new drug I would say."). The patient previously received the first dose of the bnt162b2 (PFIZER-BIONTECH COVID-19 MRNA VACCINE) for COVID-19 immunization on an unknown date and experienced adverse event ("no problem, nothing happened, there were minor things here and there"). On an unspecified date in Feb2021, the patient began to hallucinate (medically significant), dizzy (non-serious), and bed nightmare (non-serious). The patient did not receive treatment due to the events; "No, I just ignored it."  The clinical course was reported as follows: The patient stated, "I took the virus vaccination shot (clarified as COVID 19 vaccine). The first one, there was no problem, nothing happened, there were minor things here and there. The second one I took was just this past Sunday. Something weird happened not right away, not the first day but probably it was second day, second or the third day, I am pretty sure I am not sure exactly, I think. I was not keeping track of all of that." The patient began to hallucinate; and when she got out of her bed, she suddenly had a feeling that she should look back. The patient stated that she looked back and there was her deceased sister (who died 37 years ago; according to the patient) and her daughter who was still alive; both were looking at her. The patient further reported the following: "They remained in my bed beside me. Okay, I ignored it and thought it was kind of funny because I know that my daughter is in (place name) and my sister is deceased. So, I am having a bed nightmare or something, so I ignored it. Then next thing it happened for a few days and then the dog that we just had euthanized, my daughter (name) had cancer and it was euthanized and what happened is, I was sitting on my sofa and I have seen the dog come out of my bedroom going to the bathroom but only the back of her and she disappeared. Then I spent the night at my other daughter's house and somewhere in the middle of the night I was awake in my something and I woke up and I looked over into my sistert's dining room and there was my brother standing there looking at me and there was two of his children sitting at the table also. I thought this is getting a little weird." The patient reported that nothing like this happened before. The patient wanted to understand the event because she "never had been dizzy from my drug, taking the drug (unspecified medication) that made me dizzy but that not the same thing what is going on here." The clinical outcome of the events was unknown.  The batch/lot numbers for the vaccine, bnt162b2, were not provided and will be requested during follow up.