ear infection; nauseous; felt the room spinning; she thought she was having a stroke; lightheaded/ dizzy; This is a spontaneous report from a contactable consumer, the patient. A 71-years-old female patient received the first dose of BNT162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE), via an unspecified route of administration, administered in right arm on 10Mar2021 between 3:15PM-3:30PM (Batch/Lot Number: EN6206) (at the age of 71-years-old) as a single dose for COVID-19 immunisation. Medical history included cessation of smoking as the patient stated that she quit smoking in either 2006 or 2007, ongoing blood pressure high from 1986, edema from 2012, hypothyroidism since about 2012-2013, high cholesterol for about 6-7 years and took simvastatin, potassium low from 2012 as she stated that she found out she had low potassium in 2012 when she had blood work done before she was scheduled for surgery and took potassium chloride (KLOR-CON), she used a walker a lot of the time and she stated that her weight fluctuated. She said that her current weight was the heaviest she had been. She said that she gained weight when she quit smoking. She said that she had hypothyroidism, and was old, which didn't help her weight. There were no concomitant medications. Family medical history relevant to adverse events (AE(s)) was not provided. The patient did not receive any other vaccines within four weeks prior to BNT162b2. The patient did not administer additional vaccines on the same date of BNT162b2. She mentioned that she received the first dose of BNT162b2 on 10Mar2021, a Wednesday. She said she didn't notice until the following Sunday on 14Mar2021 that she was lightheaded and dizzy. She said at first she thought she got up too fast, and that was what made her lightheaded. She specified on the Monday morning that it was really bad, she got lightheaded when she was got down on the floor at home doing her therapy and she felt the room spinning on 15Mar2021. She said that her symptoms got worse on Monday night on 15Mar2021 when she laid down in bed. She said that she tried to sit up in bed for as long as she could. She said as long as she was sitting up in bed, she wasn't lightheaded and the room didn't spin. She said she thought maybe she was getting an ear infection, so she took her fingers and plugged her ears for 30 seconds to see if that would help. She said that she had no pain or ringing in her ears. She said eventually she was able to lay down in bed and go to sleep. She said she didn't know what was going on. She said her symptoms were so bad on Monday (feeling lightheaded and the room spinning) that she thought she was having a stroke; and she had to grab on to the bed, got on her knees for she didn't know how long, and it did go away. She mentioned that every time she laid down, the room spun, and she had been dizzy and lightheaded ever since. She said that she was not expecting side effects after that much time had gone by from getting her BNT162b2. She said that the lightheadedness, and room spinning was still going on. She further said that as she was cradling the phone in her neck to do some work while she had been on hold for agents, she felt nauseous on 18Mar2021, but she moved around and she was fine now. She said that she thought the nausea was caused because she had been sitting at her desk working with the telephone cradled in her neck and her head looking down. The patient underwent lab tests and procedures which included potassium was on an unspecified date and weight: 175-180 lbs on an unspecified date as she stated that her weight fluctuated. She said that her current weight was the heaviest she had been. She said that she gained weight when she quit smoking. She said that she had hypothyroidism, and was old, which didn't help her weight. The adverse events, she thought she was having a stroke, lightheaded, dizzy, felt the room spinning and nauseous, did not require a visit to emergency room or physician office. The outcome of events, lightheaded, dizzy, felt the room spinning and nauseous, was not recovered, the outcome of events, she thought she was having a stroke and ear infection was unknown. The patient was due to get her second dose of BNT162b2 on 31Mar2021.