Last 5 days have been getting worse; Severe night sweats; Dehydration; Dry mouth; Little fatigued; high blood pressure; Dizzy/severe dizziness; Little unstable on his feet; Stress; Over sleeping; Little nauseated; Vertigo; Blood pressure can change as much as 50 on the diastolic and 70, 35 points on the other end as well; Severe headaches that have been running wild the last weeks; Cured his insomnia; This is a spontaneous report from a contactable consumer or other non hcp. A 58-years-old male patient received second dose of BNT162B2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Formulation: Solution for injection, Lot Number: ZW0162), via an unspecified route of administration, administered in Arm Left on 22Apr2021 07:50 (at the age of 58-years-old) as dose 2, single for covid-19 immunization. Medical history included ongoing anxiety, ongoing acid reflux/GERD (slight case of A1C elevated but not diabetic, overweight, age), chronic pain (at his age, he does have chronic pain. He was 58 and had been on his feet for 42 years, foot pain, back pain and nothing where he has to totally take something), chronic bronchitis (not had bronchitis since Covid), A1C elevated, overweight, respiratory issues (intermittent respiratory issues with chronic bronchitis due to the medication he takes for acid reflux), insomnia (since he was 19 years old), covid-19 from an unknown date and unknown if ongoing. Family medical history Includes Has a history of lung cancer in his family. Concomitant medications included lansoprazole (PREVACID) (Has been taking for the last 11 years) taken for gastrooesophageal reflux disease, alprazolam (XANAX) taken for anxiety, vitamin d3 (has been taking about 30 months) for an unspecified indication, magnesium (has been taking forever, about 5 to 7 years) taken for prophylaxis from an unspecified start date and ongoing. Historical vaccines included dose 1 (Batch/lot number: EP8727) on 01Apr2021 in left upper arm for covid-19 immunization. No additional vaccines administered on same date of the Pfizer suspect. No prior Vaccinations (within 4 weeks). No adverse events following prior vaccinations. He knew there would be some side effect fatigue and what not. He had experienced within 2 weeks of the second shot, high blood pressure. He had never had that in his life. He had severe night sweats that are intermittent. In addition to that, had severe dizziness and had been a little unstable on his feet. He never had these symptoms before the vaccine, never had high blood pressure before. He had to go on medication for this. It is kind of controlled now but he was getting erratic readings. It would be 121/87 and then would be 181/107 five minutes later. Something was going on and he does not want to say that it was the Pfizer vaccine, but everything was pin pointing that way. It had been over 90 days, had been about 100 days and it should have passed by now. The CDC was now promoting a third booster shot. He had to go back to work. He could not go back to work with high blood pressure and the stress. He was an executive chef and had to do the test open first before he goes back to work. Going back to work and it was all unorganized chaos. Everything (pandemic) had been on a 2 year hiatus and was becoming exponentially insane with the variants and the side effects. He was more concerned with the blood pressure. He was oversleeping and having too much time on his hands. Another strange side effect from Pfizer which had been a godsend, was that it cured his insomnia. He had insomnia since he was 19 years old, and he was now 58. He goes into the REM sleep cycle now that he had not achieved since his late teens, early 20s. REM cycles now produces mucous on his eyes which was fantastic, and he wakes up feeling ultra-refreshed. He has been seeing the same doctor for the last 3 years. Stated we could contact them if we need to. Stated they probably would have everything acute but nothing chronic. Everything was documented. His body has broken down and he was 58. He was like a high mileage vehicle. With the second one, when he came home, the first night after the second dose, and he was told to hydrate. He had dry mouth. It was every morning and seemed like his body was burning up water, maybe trying to create antibodies. He had no diarrhea or anything like that. He was dehydrated and felt like he was never having enough water. That day, and he had gotten there at 0745, he came home and laid down. About 5:00 in the afternoon he had to get some Gatorade and water. It was about 6 to 8 hours later after the second dose. He had lots of water. The first couple of weeks, just waking up, he was having to put the blanket on a clothesline to dry it because it was so soaked. It has not happened frequently but, it still happens, the night sweats. He had night sweats before but never to this degree. He still gets them but only a fraction of what it was. His girlfriend looked at his quilt and said that sweat was coming through the quilt. He had to take it off and do an entire bed change and change his clothes. His t-shirt was even sticking to him. Stated that the dehydrated feeling has stopped but has been noticing he has bad days where it is kind of hard to explain. He get a little fatigued and dizzy, a little nauseated. He has been having to take Dramamine to make sure he doesn't fall down. He is thinking maybe he has vertigo. His high blood pressure, he should not have an issue with that. He controls his diet and does exercise. One thing that scared him with the blood pressure was that one arm was higher than the other. He could sit down and not move and his blood pressure could change as much as 50 on the diastolic and 70, 35 points on the other end as well. Right now, he had it under control. He does not want to keep taking medication. The bottom number was extremely high. The top was back to normal. It was very inconsistent and had no consistent readings. When he gets out of bed it could be through the roof and then he does a couple of things for a couple of hours and it goes back to normal. And later it was 70 points higher and was all over the place. He was an athlete. He believes the high blood pressure started after the vaccine. He did not have a cuff in the house. He thought maybe he was eating a lot of salt and had a great deal of stress. He donated blood and they said his blood pressure was through the roof. After sitting, it went down. He thought it was directly a correlation. He thought there had been a better explanation. He never had it in his life. Maybe 80 or 90 but for it to be 157/110 then 97 for the bottom number, that was extremely scary. He was checking his blood pressure now. His blood pressure was now 133/86 which was next to normal. This was taken in the right arm. His blood pressure was 138/102 in the left arm, which was the arm that he received the vaccine. Stated that was a big difference in the bottom number. He does have a pinched nerve but that was high. He knows the left arm was closer to the heart and so it might be a little higher. He just had severe headaches that have been running wild the last weeks. He had them since the vaccine, but the last 5 days have been getting worse. Adverse event hypertension and blood pressure abnormal require a visit to physician office. No relevant tests. Blood work came back 5 by 5 and was perfect. It was in Feb2021. There was more blood work due some time in Oct2021. He had it done every 6 to 8 months. Caller states that he had in excess of 15 negative Covid tests pre and post vaccine. He gets checked every 2 weeks. The medication he had been taking for high blood pressure was Losartan potassium and stated that they upped the dose from 25mg to 50mg.The reporter considered the event dry mouth as serious (medically significant). Patient asked for high bp, Is that one of the known side effects of the vaccine. Also asked, When you get the vaccine, does it produce antibodies or do you only get antibodies from the virus, Should I get an antibody test. Response was A review of the Prescribing Information for Pfizer BioNTech Covid 19 vaccine did not find information regarding erratic blood pressure. Asked, When you get the vaccine, does it produce antibodies or do you only get antibodies from the virus. Has not taking anything else besides the blood pressure medication. The outcome of event night sweats, hypertension, nausea, headache was not recovered, dehydration was resolved, blood pressure abnormal was recovering and rest all events was unknown.   Follow-up attempts completed. No further information is expected.