vomiting; autoimmune disease; esophagus was narrowed.; hard time breathing/he couldn't breath; He wasn't able to eat, drink, swallow/couldn't swallow; can't stand; Dizziness; ANA positive; off balance; He also lost his voice too.; This is a spontaneous report from a contactable consumer (patient's wife). A 64-year-old male patient received BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, solution for injection), dose 2 via an unspecified route of administration on 07May2021 (Batch/Lot Number: EW0150) (at the age of 64-year-old) as DOSE 2, SINGLE for covid-19 immunisation.  Medical history included deep vein thrombosis (he is on Xarelto); allergy to penicillin and iodine; kidney stone, bleeding disorder (is on blood thinners), diverticulitis which was clarified as prior to the vaccine, insomnia (already had this before) and back pain. Family medical history relevant to AEs was none but mentioned that both his parents had heart issues. Concomitant medication included tramadol (TRAMADOL) taken for back pain from an unspecified start date and ongoing and rivaroxaban (XARELTO) taken for deep vein thrombosis, start and stop date were not reported. Historical vaccine included Pfizer-BioNTech COVID-19 Vaccine (BNT162B2) dose 1 (Batch/lot number EN6201) on 16Apr2021 (at 64-years of age) for COVID-19 immunization and experienced vertigo, allergic reaction, memory loss/he can't remember, he lost a lot of weight of about 75 pounds, very tired and sleeps all day. The patient had no prior vaccinations within 4 weeks prior covid-19 vaccine. It was reported that the patient received first dose of vaccine on 16Apr2021 and had an allergic reaction of vertigo. On 07May2021, he received the second dose and the vertigo was still there and it never went away. The reporting spouse mentioned that she took her husband anywhere possible. He had vertigo, memory loss, he lost a lot of weight of about 75 pounds after 16Apr2021; he can't remember anything. He's very tired and sleeps all day. It was mentioned that the patient had been on ER for 2 days, on 17May2021 and on 16Jun2021, twice. The primary doctor suggested they go to an ENT, and the ENT doctor suggested colonoscopy and everything was clear. He also underwent endoscopy where they go down the throat. He wasn't able to eat, drink, swallow and had a hard time breathing and they were able to stretch out the esophagus. He's been having difficulties sleeping, insomnia (although he already had this before) and backpain, everything. She also mentioned that the patient can't stand. He also had DVT (deep vein thrombosis) before vaccination and was on blood thinner. The ENT doctor had him done a certain blood test and he came out ANA positive for an autoimmune disease that may have something to do with everything that was going on. The vaccine brought out something. He also has a CT Scan of the brain and was fine. The patient had to be taken to rheumatoid sites for evaluation. The primary doctor also doesn't know what to do. He also lost his voice too. The reporter mentioned that she had no idea what to do and was asking for any information and guidance. It was confirmed that the patient does not have anything specific to vertigo or what he was experiencing, mentioned that dizziness might be a sign of a severe allergic reaction. The reporter commented that this was not normal, and something was not right. She added that not everybody can have the vaccine. People must be careful with the vaccine because it is not safe especially in children. She also mentioned that they should've told or warned people with any pre-existing conditions. She (reporter) added that she wasn't sure going through all the testing. Everything was non-conclusive. It was not right. She does not think children should not get the shot. It was a safety issue if children ever get this shot, it distorts everything. It was reported that the patient received the second shot on 07May2021, he developed an allergy he does have a bleeding disorder and was on blood thinners. It was clarified that bleeding disorder was prior to the vaccine as he had deep vein thrombosis and was on XARELTO. It was mentioned that the patient went to emergency room overnight, he went in because he was vomiting. They thought it was diverticulosis, but they couldn't pinpoint it. They thought it was kidney stones. He ended up in the ER from 16Jun2021 to 17Jun2021. He got a colonoscopy because he had lost weight. The colonoscopy was on 26May2021. He went into the hospital 17May2021 he did say he had pain. From the colonoscopy went in for it couldn't pin point does not have diverticulosis. Trying to say he had kidney stones and the urologist said it could not have caused pain because he had small kidney stones that could not have caused it. He went to the ENT, he was off balance, couldn't drink, couldn't swallow. The doctors gave him a list of things. The patient had scheduled blood work to get things done one was autoimmune, ANA, and a rhuematory factor. The other one was sagon (as reported). It was reported that when the patient ended up in the ER, he couldn't breath and it was because his esophagus was narrowed. The events resulted to  Physician Office Visit. The patient was hospitalized for vomiting from 16Jun2021 to 17Jun2021. The outcome of the events was unknown.  Follow-up attempts are completed. No further information is expected.