Fell twice; Severe pain in body; That night he had a little discomfort.; They sent him home, and he has been miserable ever since .; He is still trying to get rid of the pain in his neck.; He just doesn't feel right; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 78-year-old male patient received BNT162b2 (BNT162B2), on 30Mar2022 as dose 4 (booster), single (Batch/Lot number: unknown) at the age of 78 years, in right arm for covid-19 immunisation. The patient's relevant medical history included: "Diabetes" (unspecified if ongoing), notes: Diabetes diagnosed 25-30 years ago; "allergies" (unspecified if ongoing); "compromised immune status" (unspecified if ongoing); "obesity" (unspecified if ongoing); "endocrine abnormalities" (unspecified if ongoing); "genetic/chromosomal abnormalities" (unspecified if ongoing); "respiratory illness" (unspecified if ongoing). There were no concomitant medications. Vaccination history included: Bnt162b2 (First Dose, He had received both of his original COVID vaccines by Pfizer, and everything was fine.), for COVID-19 Immunization; Bnt162b2 (Second Dose, He had received both of his original COVID vaccines by Pfizer, and everything was fine.), for Covid-19 immunization; Bnt162b2 (First Booster Dose, The time came up and he went to get the first COVID booster by Pfizer), for Covid-19 immunization.  The following information was reported: DISCOMFORT (non-serious) with onset 31Mar2022, outcome "unknown", described as "That night he had a little discomfort."; PAIN (non-serious) with onset 01Apr2022, outcome "recovering", described as "Severe pain in body"; FALL (non-serious) with onset 02Apr2022, outcome "recovered", described as "Fell twice"; NECK PAIN (non-serious) with onset 2022, outcome "not recovered", described as "He is still trying to get rid of the pain in his neck."; MALAISE (non-serious) with onset 2022, outcome "unknown", described as "He just doesn't feel right"; FEELING ABNORMAL (non-serious) with onset 2022, outcome "unknown", described as "They sent him home, and he has been miserable ever since .". The event "severe pain in body" required emergency room visit. The patient underwent the following laboratory tests and procedures: Pain assessment: was like a 10, it was so severe.. Therapeutic measures were taken as a result of pain.   Additional information: Caller had a bad experience and was told to call Pfizer. He had received both of his original COVID vaccines by Pfizer, and everything was fine. The time came up and he went to get the first COVID booster by Pfizer. Then, on 30Mar2022, the pharmacy said they were giving the last COVID vaccine booster out.  Everything went fine. The girl did a good job pushing the needle in. On Thursday afternoon, and then that night he had a little discomfort. Then, on Friday man it set in. Pain Level:  was like a 10, it was so severe.  He took an ambulance, and the Emergency room gave him 3-14 shots for pain. They agreed it was probably the COVID vaccine. They sent him home, and he has been miserable ever since. The medication the Emergency Room sent him home with was Methylprednisolone. He took multiple pills each day. He was still trying to get rid of the pain in his neck. Today, he felt kind of better. He did not have his shot card with him. He was told that he should reverse who the first two vaccines were manufactured by with a different manufacturer for the booster. He usually did not complain about pain. He has fell twice too. He felt once Saturday on 02Apr2022 and then again that evening when he was going to bed. He just did not feel right. He could not work like he liked to outside.    The information on the batch/lot number for BNT162b2 has been requested and will be submitted if and when received.