real sick; weak; chills; shaking; couldn't think that well; knee, shoulder and neck were bothering again and a lot of pain; knee, shoulder and neck were bothering again and a lot of pain; had to help him walk to get him up in the car and the house/he was dragging; he was getting cold / He was too cold at the dialysis center; wasn't paying attention; he was sleepy; His head was hurting real bad; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from medical information team.  A male patient received bnt162b2 (BNT162B2), administration date 26Mar2021 (Batch/Lot number: unknown) as dose 1, single for covid-19 immunisation. Relevant medical history included: "covid" (unspecified if ongoing), notes: He had covid before and was in the hospital / was in the hospital for 2 months when he had covid; "was in the hospital for 2 months" (unspecified if ongoing), notes: He had covid before and was in the hospital / was in the hospital for 2 months when he had covid; "dialysis", start date: 25Mar2021 (unspecified if ongoing); "arthritis" (unspecified if ongoing), notes: had knee problems due to this. The patient's concomitant medications were not reported. The following information was reported: ILLNESS (non-serious), outcome "unknown", described as "real sick"; ASTHENIA (non-serious), outcome "unknown", described as "weak"; GAIT DISTURBANCE (non-serious) with onset 27Mar2021 09:00, outcome "unknown", described as "had to help him walk to get him up in the car and the house/he was dragging"; CHILLS (non-serious), outcome "unknown", described as "chills"; TREMOR (non-serious), outcome "unknown", described as "shaking"; FEELING COLD (non-serious) with onset 27Mar2021, outcome "unknown", described as "he was getting cold / He was too cold at the dialysis center"; THINKING ABNORMAL (non-serious), outcome "unknown", described as "couldn't think that well"; DISTURBANCE IN ATTENTION (non-serious) with onset 27Mar2021, outcome "unknown", described as "wasn't paying attention"; SOMNOLENCE (non-serious) with onset 27Mar2021, outcome "unknown", described as "he was sleepy"; HEADACHE (non-serious) with onset 27Mar2021, outcome "unknown", described as "His head was hurting real bad"; ARTHRALGIA (non-serious), NECK PAIN (non-serious), outcome "unknown" and all described as "knee, shoulder and neck were bothering again and a lot of pain". Therapeutic measures were taken as a result of headache. Additional information: the patient's age was reported as 67 (unit was unknown). After the first dose of the Pfizer vaccine, it made the patient real sick and weak. He had covid before and was in the hospital. He went to dialysis and his daughter had to help him walk to get him up in the car and the house (like when he had covid). Patient was having chills, shaking, and couldn't think that well. Reporter needed to keep talking to the patient. He was weak, like when he first got sick. He was too cold at the dialysis center. Clinical course of events was also described as follows: The patient was in the hospital for 2 months when he had covid. Patient had dialysis on 25Mar2021, Thursday, and on 26Mar2021, Friday, he had his first dose of the Pfizer vaccine. On the first day, the patient didn't have any reactions. He was fine that day and that morning before dialysis. He was doing fine early morning at 5am then at 6am to get ready for dialysis on 27Mar2021, Saturday, at 9am, but he was dragging. His daughter had to help him get ready just like when he had covid. As he was doing dialysis, he was getting cold, like he wasn't paying attention, he was sleepy. His head was hurting real bad and patient took Tylenol and was feeling better. Patient had no fever and was sleepy. The patient already had knee problems due to arthritis, but his knee, shoulder and neck were bothering again and a lot of pain. The reporter wanted to change the patient's appointment for his 2nd dose of the Pfizer vaccine due to dialysis appointment.  No follow-up attempts are possible; information about lot/batch number cannot be obtained. No further information is expected.