during the night he would get such leg pain that he could not sleep; during the night he would get such leg pain that he could not sleep; lost his voice, voice became very weak; bedridden; flu like symptoms; lots of chills; excessive leg muscle attacks; weak; Pain in cheeks of his butt; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 74 year-old male patient received bnt162b2 (BNT162B2), administered in arm right, administration date 18Feb2021 17:30 (Lot number: EN6198, Expiration Date: Jun2021) at the age of 74 years as dose 1, single for covid-19 immunisation. Relevant medical history included: "hives" (unspecified if ongoing), notes: Verbatim: Hives. There were no concomitant medications. Vaccination history included: Penicillin shot. The following information was reported: BEDRIDDEN (non-serious) with onset 19Feb2021, outcome "unknown", described as "bedridden"; INFLUENZA LIKE ILLNESS (non-serious) with onset 19Feb2021, outcome "unknown", described as "flu like symptoms"; CHILLS (non-serious) with onset 19Feb2021, outcome "unknown", described as "lots of chills"; MYALGIA (non-serious) with onset Feb2021, outcome "not recovered", described as "excessive leg muscle attacks"; APHONIA (non-serious) with onset Mar2021, outcome "unknown", described as "lost his voice, voice became very weak"; ASTHENIA (non-serious) with onset Feb2021, outcome "unknown", described as "weak"; PAIN IN EXTREMITY (non-serious), INSOMNIA (non-serious), outcome "unknown" and all described as "during the night he would get such leg pain that he could not sleep"; MUSCULOSKELETAL PAIN (non-serious) with onset Feb2021, outcome "unknown", described as "Pain in cheeks of his butt". Relevant laboratory tests and procedures are available in the appropriate section.  Additional information: He was calling about the Pfizer COVID 19 shot. He received the first shot on 18Feb2021 and he had some very severe side effects. He said from the first shot, he was bedridden for 2 weeks. He clarifies said he had flu like symptoms, lots of chills, but no temperature. He was very weak. The vaccine attacked his legs. He had excessive leg muscle attacks all the time. He has not regained strength in his legs yet. He was better but he still has a ways to go. He said he lost his voice, his voice became very weak. He said he lost his voice on the 19Feb2021 or 20Feb2021. His voice is recuperated to almost 100%. He confirmed he started getting chills the morning after he got the shot, 19Feb2021. The excessive leg muscle attacks started a little later, maybe on 20Feb2021 or 21Feb2021, during the night. He doesn't recall it happening right away because he was bedridden because of the flu like symptoms, but then during the night he would get such leg pain that he could not sleep. The pain was in his legs and the cheeks of his butt. It was pain that he has never had before. He doesn't believe he has recovered 100% in his legs. He confirmed all the symptoms described above was for the first dose of the COVID-19 vaccine. He said many years ago, he did have a reaction to a penicillin shot. He clarifies he think this shot gave him the hives, it must have been 30 years at least.  No follow-up attempts are possible. No further information is expected.