Swelling in left arm and hand; left arm felt like it was asleep; his fingers were almost blue like a lack of blood flow or something; his fingers were almost blue like a lack of blood flow or something/looked more bluish and occurred again; Lightheadedness; Had some serious problems with blood pressure; This is a spontaneous report from a contactable consumer (patient). A 82-years-old male patient received BNT162b2 (PFIZER BIONTECH COVID-19 mRNA VACCINE, Solution for injection, Batch/Lot Number: EL9267, Expiration date and NDC number was unknown), via an unspecified route of administration, administered in left arm in muscle on shoulder on 11Feb2021 at 08:30 hours as dose 1, single (at the age of 82-years-old) for COVID-19 immunisation. Medical history included heart bypass from 2003 to an unknown date, abnormal blood pressure from an unknown date and unknown if ongoing and heart bypass and pacemaker placed (pacemaker placed in end of Apr2020. Was taken into hospital in an emergency situation at 7:00 hours and left hospital before 13:00 hours and pacemaker were placed. There were 3-4 cases of COVID being treated in a special thing) from Apr2020 to an unknown date. Patient does have some maintenance medication. Never experienced problems. Patient had been on maintenance medications since 2003. No additional vaccines administered on same date of Pfizer suspect and history of all previous immunizations was not reported. Patient was anxious at his age to get the COVID-19 Vaccine and protect himself very well. Patient wanted to get both COVID-19 Vaccines to be able to visit family. Patient had no relevant family medical history. Patient had no prior vaccinations within 4 weeks. Patient did not feel the needle when he received the COVID-19 Vaccine, just maybe a couple hours later felt where it went in, but there was no problem. On 09Feb2021, patient had lab work done. Patient gets lab work done every 9 months to monitor liver functions due to maintenance medications. Patient sister has been a hypochondriac. Patient had a side effect from first shot of Pfizer vaccine. Patient stated that everything was fine, on 11Feb2021 at 08:40 hours, ten minutes after injection patient experienced lightheadedness, twenty minutes alter it was gone. Had a good day on 11Feb2021. On 12Feb2021, patient woke up in the morning and the left arm felt like it was asleep, patient received vaccine in left arm. Patient noticed it before he got out of bed. Patient moved around a bit and noticed his fingers were almost blue like a lack of blood flow or something. Patient swung his arm around and it was not hurting. Patient felt like his arm was half asleep. Patient went on throughout day and kind of forgot about it. Actually, looked better. On 12Feb2021. around noon time, the same thing happened, looked more bluish and occurred again at 18:00 hours. On Feb2021, patient had some serious problems with blood pressure and calls the nurse line because they had his history of blood pressure problems. Had a heart bypass and pacemaker placed. Patient was advised by the nurse line to go to health clinic. Had an electrocardiogram (EKG) because of his heart issues and was told by the doctor it was just a side effect of the vaccine. On Feb2021, patient had EKG at a health clinic. Patient was told not to worry about it, and it would go away in a couple of days. Patient stated that had not bothered him since, but his arm was still a little swollen. Doctor at his dental appointment noticed the swelling also. There was no pain associated with the swelling. Arm feels like it was not fully awake. Patient was so happy to get the first vaccine. On 16Feb2021, it was still a little bit swollen. Left hand was still off color from the right hands. Left hands just look a little more red. Patient is not out of the woods yet. Patient was not worried about it. Patient stated that due to age and health situation, had to visit the Emergency room a couple of times and calling the nurse line helps him stay away from the Emergency room. Patient stated that he does not sleep on left side, sleeps on his right side. Patient had no relevant test since the COVID-19 vaccine. Patient second dose was scheduled for four weeks (14Mar2021) from first vaccine. Patient was told this was not right but stated four weeks was better than no weeks. Patient was looking forward to second COVID-19 Vaccine. Patient had a family member who go the second shot, his baby sister, in a different state. His sister had no trouble with first COVID-19 Vaccine. The outcome of Lightheadedness was recovered on 11Feb2021 at 09:00 hours and unknown for rest of the events.  Follow-up attempts completed. No further information expected.