Fournier gangrene/was very close to having Fournier gangrene twice; cellulitis of the scrotum; developed this great big welt/welt on his thigh; real dizzy; perforated his bladder; weakened bladder area/two areas on his bladder; abdominal abscess; This is a spontaneous report from a contactable consumer (patient). A 63-Year-old male patient received 2nd dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE) at single dose via an unknown route on 23Jan2021 at 63-Year-old for Covid-19 immunization. Medical history included right leg had circulations issues. He almost had or was born with a lymphatic problem with his right leg, which fluid did not leave his leg well, so he has to watch for cuts to his leg and clean it well, it swells sometimes, it was very manageable, and he had no problems until he had the Pfizer shot vaccinations. He went to the ER Christmas day after he had to fight off his dog, which he was not bitten, but he hurt his back area to right lumbar area and hip, he pulled muscles, which got treated on 27Dec2021 with a pain shot and a steroid then he went home. He got his vaccines the following week, this had happened before that he had problems with his back area where he think he pulled a muscle, and this did occur and it was unknown if it could have any bearings on this. He was always been a healthy man, rarely missing work, runs three times a week. Concomitant drug was not provided. Historical vaccine included 1st dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE) on 02Jan2021 at 63-Year-old for Covid-19 immunization. In early Jan2021 when he received his doses, not once but twice, three times he had been hospitalized since then and had never had to be in the hospital. He was admitted to the hospital the first time in January, and again in April, he thinks he missed the whole month of April at work. He further stated he went to the hospital maybe twice in January, with the second hospital visit towards February sometime. He went to the ER four times. His concerned was that when he received his shot he almost had Fournier gangrene (onset date Jan2021), twice, had cellulitis of the scrotum (onset date Jan2021 ) which almost lead into gangrene and had to wait 3 or 4 days before finding out whether or not they were going to remove his gentiles or not. He had when he was born in his right leg had circulations issues there, not real sever but had to watch if her were to cut his leg to make sure the he didn't get cellulitis in his leg, and he had always taken care of his leg really well but after he received his Pfizer shots, he "developed this great big welt" on the top of his thigh (onset date Jan2021) and it scared him to death , it was at night and he woke up and was laying bed and put his hand on the top of his thigh and had this 5 inch, 1 1/2 wide welt, and it stood up. He felt it and jumped out of bed, it scared him didn't know what it was, it was a welt, and it looked like it had some blood in it. He says it was after the shot that he had the big welt to his thigh and leg area, which he never had before, and then it moved down into his scrotum area. He called his doctor and she thought that well it might be absorbed into his system, excess fluid, just never seen anything like it. But 3 or 4 days after that welt he developed cellulitis in his scrotum which was moving so fast that he went into the ER because it scared him and one of his doctor friends said he needs to get an ultra sound, so he did, and from there they did a cat scan and then they called in a surgeon and the surgeon says the worst case scenario was that if this turns in to Fournier gangrene, they may have to amputate his gentiles, scrotum, testicles and penis. He stated he also had an abdominal abscess (unknown date in 2021), also had to have bladder surgery (unknown date in 2021) and then from the bladder surgery they perforated his bladder (unknown date in 2021) which made things worse, but the perforation was a condition from the surgery which was, when he had a weakened bladder area. And also developed two areas on his bladder which the doctor can not explain what happened there either. Also stated that about 3 and 1/2 weeks spells where he would get real dizzy. He had been working in hospitals since 1978 (also reported as 1983) and had missed probably a handful of days and now (as of 10Sep2021) had missed over 55 days (55-60 days) and it's just been very challenging. He further reported that he almost had, or point blank was very close to having Fournier gangrene twice, to his scrotum and penis, which he went to the hospital twice for that, and also was in the hospital with an abdominal abscess. He says then he had bladder surgery and they perforated his bladder. He said that he was finally doing better after a 5 month period.  He got two doses of IV antibiotics for four days, and for several days the first time they came in to monitor him daily for possible surgery of removal of whole entire genital area. He says he had went to the ER the first time in January, and then they admitted him for the Fournier gangrene. He says that the IV antibiotics counteracted this, and his doctor said if he would have come in a few days later it would have been Fournier gangrene, and if this would have been thigh it would be necrotizing fasciitis, but since it was his scrotum and penis it would be Fournier gangrene. They didn't get to this diagnosis, they diagnosed that he had cellulitis and they were able to stop it from going further, but it was so close to Fournier gangrene, so he was lucky there. He says for three days he was placed on two dose of heavy IV antibiotics, he thinks they were Zosyn and Vancomycin, which he was at the hospital for four days, then they discharged him on oral meds for ten more days. He said in the last year (in 2020) here had been men admitted to the hospital that he works at with this disorder.  Patient was doing better as of 10Sep2021. Outcome of the events was resolving.   Reporter seriousness for was very close to having Fournier gangrene twice was hospitalization from Jan2021, for abdominal abscess was hospitalization from an unknown date in 2021, for welt on his thigh, bladder surgery, perforated his bladder, cellulitis was unspecified. He was not sure if it could be directly or indirectly related to getting the Pfizer COVID-19 vaccinations that he received on the 02Jan2021 and 23Jan2021, if those could be the reason for what happened to him.    The lot number for the vaccine, [BNT162B2], was not provided and will be requested during follow up.