foggy brain; Fatigue; Nausea; dull headache; Lightheadedness; Heart racing; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient.  A 63 year-old female patient received bnt162b2 (BNT162B2), administered in arm left, administration date 01Mar2021 14:25 (Lot number: EMZO3) at the age of 63 years as dose 1, single for covid-19 immunisation. Relevant medical history included: "Chiari malformation", start date: Dec2007 (unspecified if ongoing), notes: Verbatim: Chiari malformation; "Vestibular migraine" (unspecified if ongoing), notes: Additional Information for Other Conditions: She was finally diagnosed 2.5 years ago; "Asthma" (unspecified if ongoing), notes: Additional Information for Other Conditions: diagnosed when she was in her twenties. She probably had it as a child.; "she has medical issues and emotional issues" (unspecified if ongoing). Concomitant medication(s) included: FLUOXETINE taken for emotional disorder. Past drug history included: Magnesium for dizziness, notes: lot number is 20C033 and expiry: 2023. It is 200mg and she takes one at night. The following information was reported: FEELING ABNORMAL (non-serious), outcome "unknown", described as "foggy brain"; FATIGUE (non-serious), outcome "unknown", described as "Fatigue"; NAUSEA (non-serious), outcome "unknown", described as "Nausea"; HEADACHE (non-serious), outcome "unknown", described as "dull headache"; DIZZINESS (non-serious), outcome "unknown", described as "Lightheadedness"; PALPITATIONS (non-serious), outcome "unknown", described as "Heart racing". Relevant laboratory tests and procedures are available in the appropriate section.  Additional Information: Consumer said that she has a history of vestibular migraine, and suffers from fatigue all the time. But after receiving the 1st dose of the Pfizer-BioNTech Covid-19 Vaccine, she experienced fatigue, and lightheadedness. She also said she had a headache, foggy brain, and felt dizzy and tired. She wants to know if this is a normal reaction to the vaccine. Consumer wanted to know if she should still receive the 2nd dose of the Pfizer-BioNTech Covid-19 Vaccine if she had a reaction with the 1st dose. Fluoxetine: Generic for Prozac. She has found that she can't be without antidepressants because she has medical issues and emotional issues. Had surgery in Nov2010. It is not curable. She got her shot Monday afternoon. She kind of immediately felt a little weird in her head. She has been fatigued since. She has a lot of underlying health issues. She has Chiari malformation and vestibular migraines so she suffers with fatigue, dizziness, and lightheadedness anyway. That is why she was leery of getting the vaccine. She didn't want to feel worse. People were saying it didn't make her feel bad, but all she wants to do is sleep. There are times when she feels better. When she tries to do something, she has to go lay down. She has slight dizziness, nausea, dull headache, lightheadedness, and heart racing. The heart racing is not constant. What are normal side effects? She is scared to get the second one. She is moving in April and is getting the second one on 22Mar2021. Will she be too fatigued to move? If it is normal she will deal with it. Caller clarified shot as COVID Vaccine. It was manufactured by Pfizer and was her first dose. She had horrible dizziness for weeks and that is better since taking Magnesium. Caller clarified that she hasn't been dizzy since getting COVID vaccine. She has headaches quite a bit, but this is more of a constant and dull headache. It is more fogginess. It is different than her normal headaches. With her normal headaches she could still go about her business, but this different. She lives with her son, daughter-in-law, and a one year old. Sometimes she has to tell her daughter-in-law that she has to go lay down. The fatigue is more than normal. She also has a little nausea. No vomiting. The heart racing started after the shot. She has low blood sugar and all these issues. Sometimes her heart would race, but it had not in a long time. That kind of scared her. The lot number on the vaccination card is hand written and she can hardly read it. she has asthma and her family is worried because she has asthma. Her ex in-laws were like don't get it because they are wholistic. Her sisters got it and said she should. Caller was in denial about COVID and then thought she should get it. Magnesium. The lot number is 20C033 and expiry: 2023. It is 200mg and she takes one at night. The neurologist said it helps with vestibular migraines and it has helped the dizziness. The vertigo was too bad and she couldn't function before taking Magnesium. She used to get the flu shot and felt clammy for a day. Caller doesn't have lot number to provide for flu shots. She hasn't had one in years. The patient concomitant medications included inhaler, allergy shots  No follow-up attempts are possible. No further information is expected.