had a reaction to it, entire arm, not just where the injection was given, turned red and hot to the touch; had a reaction to it, entire arm, not just where the injection was given, turned red and hot to the touch; It was red, but didn't swell, but was hot as heck/ his whole hand and arm was red and hot to touch; This is a spontaneous report from a contactable consumer or other non hcp. This consumer (patients mother) reported for a 26-year-old male patient. A 26-year-old male patient received first dose of bnt162b2 (PFIZER-BIONTECH COVID-19 MRNA VACCINE, Solution for injection, Batch/Lot Number: 30130BA), via an unspecified route of administration, administered in Arm Right on 14Sep2021 (at the age of 26-years-old) as dose 1, single for covid-19 immunisation. Medical history included disabled and epileptic seizures/Epileptic seizure due to traumatic brain injury. Concomitant medication included lacosamide (VIMPAT) taken for epilepsy. The patient had no other vaccines the same day and no problem with vaccines in past. The patient had no history of previous immunization with the Pfizer vaccine considered as suspect. The patient had no additional Vaccines Administered on Same Date of the Pfizer Suspect. The patient had no other vaccines the same day and no problem with vaccines in past. The patient had no history of previous immunization with the Pfizer vaccine considered as suspect. The patient had no additional Vaccines Administered on Same Date of the Pfizer Suspect. On 14Sep2021 the patient experienced had a reaction to it, entire arm, not just where the injection was given, turned red and hot to the touch and it was red, but didnt swell, but was hot as heck/ his whole hand and arm was red and hot to touch. The reporter mentioned that she cares for her disabled son, who received his first dose of the BioNTech on 14Sep2021 and he had a reaction to it. His entire arm, not just where the injection was given, turned red and hot to the touch. It was red, but didnt swell, but was hot as heck. Then the next day it was just a size of a silver dollar, but still hot to touch and then after that it was fine and he had no problems with it since then. He did have a headache after the second dose, but its better. It was reported that the reaction with his arm probably started about 2 hours later after getting the first vaccine. He came to her stating something was wrong and showed his arm. It was red and his whole hand and arm was red and hot to touch. She looked online to see if this was a normal for people getting this vaccine and there were a number of people in groups that had a reaction and so she did call the clinic. Just wanted to be sure and was told it was okay.He went for the second vaccine on 05Oct2021 and had a headache for a couple of days, 2-3 days, and it was better. She reported that they listened to the message and told by the HCP for hemophiliac treatment facility her other 2 children are seen at to only get the Pfizer vaccine that was FDA approved and all their cards say BioNTech on them. Her question was, the BioNTech approved still only for EUA or was this the FDA approved version. Mentions they are all in quarantine right now for Covid because her grandkids had Covid. So, her daughter and son-law are also tested positive for Covid last week and they were vaccinated, except for the kids. The kids be vaccinated yet and hopefully this will get approved pretty quickly for the kids. They wouldnt have gotten the vaccine if not about the gets bleeding. The patient was in quarantine for Covid From: Oct2021. The outcome of all the events was resolving.