feeling like she was going to pass out; dizzy/dizziness/lightheaded; felt very shaky/trembling/tension trembles; This is a spontaneous report from a contactable consumer (patient). A 72-year-old female patient received the first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, lot number reported as "EN, either G or 6, 207"), via an unspecified route of administration administered in the right arm on 18Mar2021 09:00 at a single dose for covid-19 immunization. Medical history included ongoing fibromyalgia from 1981 (started 40 years ago) and it has been very bad this spring. The patient had gone to the doctor and he had just prescribed trazodone and generic pregabalin (expiry date 16Mar2022) and she hasn't ever taken those before. She started taking them on 16Mar2021 and only took them for 2 weeks. She quit taking them because she had a lot of side effects and the material of these products did talk about a side effect of dizziness and weakness and these were one of the things she experienced with these medications. According to the doctor, he doesn't know if these kind of side effects happen from quitting generic pregabalin or trazodone. Concomitant medications included levothyroxine taken for an unspecified indication, start and stop date were not reported; trazodone and, pregabalin - both taken for fibromyalgia from 16Mar2021 to 29Mar2021. Historical vaccine included a flu shot in 1981 (40 years ago) for immunization and experienced she may have passed out; she has not had a flu shot since then. The patient had the first shot of the Covid-19 vaccine on 18Mar2021. On 31Mar2021 about 12:00 she ended up in the ER because she was feeling like she was going to pass out, was very dizzy, and felt very shaky. She has the feeling that she was going to pass out just occasionally. She had an MRI and a lot of blood tests all with unknown results on 31Mar2021. They couldn't tell what could have been causing it, they said her inner ear maybe. They made sure it was not a stroke or anything and then sent her home. They gave her Meclizine (NDC: 65162-0442-10, expiry 23Apr2021) in case she got dizzy again. The Meclizine made no difference as she didn't feel better. She was using a walker in case she gets dizzy or lightheaded. The dizziness was not as bad or doesn't happen as often. A couple days later in addition to the dizziness and feeling like she would pass out, she started trembling on 02Apr2021 and it was more severe. The biggest problem was the trembling. The tremblings were called tension trembles. When she stood up her legs would tremble, and she would almost fall. When she was holding a drink in her hand, the drink was hard to get to her mouth because of it. She still has it until now. When she went to the hospital, she didn't know what it was or where it was from and they wanted her to see a neurologist. One of the doctors in the ER, since he found out that she had the first Covid shot, said she should check if it could possibly be related to the Covid shot. In addition, she was supposed to have the second shot last week and didn't get it of course. It was re-scheduled for tomorrow, 15Apr2021. She asked if she should have it tomorrow or not. If the events were not related then, she wants to get it. But if they were related, she won't. The outcome of events feeling like she was going to pass out and dizzy/dizziness/lightheaded was recovering; while the outcome of felt very shaky/trembling/tension trembles was not recovered.  Follow-up attempts are not completed; information about lot/batch number cannot be obtained. No further information is expected.