This is a spontaneous report from a contactable consumer (Patient). An 84-year-old male patient received BNT162B2 (PFIZER-BIONTEC COVID-19 VACCINE, Solution for injection, Lot Number: ER8732) via an unspecified route of administration, administered in left arm (reported as back of upper part left arm, shoulder) on 25Mar2021 (at age of 84-years-old) as dose 2, single for COVID-19 immunisation. Medical history included osteoarthritis, chronic heart failure, diabetic (controlled by medication and not insulin shots), and heart attack at age 49. He is being treated since then and a pacemaker for 11 years and now on pacemaker defibrillator since last year, he has been going downhill, just trying to maintain the level to the hill. Most of their family is fairly healthy. Patient previously received BNT162B2 (PFIZER-BIONTEC COVID-19 VACCINE, Solution for injection, Lot Number: EN6199) via an unspecified route of administration in right upper arm on 04Mar2021 (at age of 84-years-old) as dose 1, single for COVID-19 immunisation and he had absolutely no reaction. Concomitant medication included Carvedilol, Clopidogrel for heart attack, CURCUMIN as supplement; Fish oil; COENZYME Q10; Magnesium gluconate, Metformin for diabetes; Furosemide as iron supplement pill; Pantoprazole; IRON; VITAMIN C; and Hydroxychloroquine for athiritis;  It was reported that Hydroxychloroquine: One of the anti drugs. They seemed to think it had a beneficial result with arthritis. May have prevented people from getting Covid; Losartan, he usually takes these for chronic heart failure at dose 50 mg a day, but he thought he was getting no benefit from it, or maybe a little bit of discomfort and his cardiologist switched him to losartan. No family medical history relevant to adverse event. No additional vaccines administered on same date of the suspect. Patient did not receive other vaccine in four weeks of vaccination. No adverse events following prior vaccinations. Patient does not think he has had another vaccine in years. He has been working on how to get a booster shot for shingles. Now, they are telling him he ain't got no money. In Mar2021, patient experienced joint pain in ankle, knee, fingers, wrists and elbows, was tired and fatigued, and inflamed and painful in the index finger joint, knuckle, and mottled and looks like something was bubbling under the surface and within 24 to 36 hours after vaccine, he couldn't lift left arm and it weighed a ton. Events require a visit to physician office but not to emergency room. It was reported that after second shot patient didn't immediately feel any discomfort, right then at the prick. and had no, within 15 minutes reaction. However, between 24 and 36 hours later, the left arm, where he got the shot, got to where he couldn't lift it. It weighed a ton. It was never happened before. None of these things, he was blaming Pfizer for. This is what happened for one reason or another. Within a couple or three days after that, he started having joint pains. He was a victim of osteoarthritis. He started having pain in his ankle, knee, fingers, wrists and elbows, the joint pain was uniform on both sides. That continued to get worse, on a daily basis and got extremely painful. Finally, he did consult his primary care physician. Probably, in the middle of Apr2021, took some acetaminophen, pain killers to see if that helps. That took very little result, almost none and continued to get worse. Then, he got absolutely screaming pain in the joints in Jun2021. He went back to the primary care physician and they prescribed a pain killer, clarified it was prednisone that was prescribed and within 2 days was on a 15 days course, taking 3 for 5 days, taking 2 for 5 days and taking 1 for 5 days. Right now, he was on the last day for taking 2. He has 5 more days of the one pill and that's done. That has alleviated the pain to a great deal. It is down now to a pain level of minus 0.5. The pain itself cleared up in conjunction with this, his index finger joint, knuckle pain, main joint to the hand and that area where the first 2 fingers are and around the thumb was still quite inflamed and painful and he hadn't had that before with his arthritis condition. It was mottled and looks like something was bubbling under the surface and looks like mottled with red dots on the inside of the skin and was not a dermal thing, was in the joints inside. Patient does not know one way or another what was causing this and just wants to be able to open a bottle of water without being in pain. At the same time, this is a disclaimer, he was taking some referred to him innocuous homeopathic things for irritation, referred by his doctor, just to see if that helps and asked this a necessary thing, or if not has it happened before. Maybe someone knows something. Patient states that his voice was failing but it has nothing to do with COVID or anything else. His arm was not painful. It just seemed as he though there was no muscle in there, just tired and fatigued along with the pain. Initially, when he felt fatigued, have a period at the very beginning of the onset of the pain where he was just totally fatigued and had to rest coming up the stairs a couple of times. He told the doctor he was running out of steam and that had eventually cleared up and has to go out in the garden today. He noticed the pain first and didn't really notice the fatigue at first. It sort of arrived at the same time, maybe even a bit later, the fatigue developed. It was disheartening, not disabling, except to move. Except the arm pain, the joint pain was diminished and it was very manageable. He took a couple of acetaminophen after his coffee and breakfast. The pain has pretty much gone and was functional. The prednisone has almost gotten rid of the pain. Treatment received was acetaminophen and the prednisone. Has also been taking some homeopathic medicines. One of them was lithium carbonicum and takes 10 drops, twice a day for long term avoidance of inflammation and help with the arthritis and joint inflammation. These were provided by his homeopathic practitioner, and other medication was Thuja occidentalis 30 and takes 3 pills a day, probably taking for a week. They were for post pain discomfort. Has been taking supplements that are minor to help improve and are not medical but herbal. He mentioned the acetaminophen shown very little results. Lab test on an unspecified date in 2021, included bloodwork and result was showing anemia and was on iron supplements and it still hasn't shown any change in the anemia. They were testing for blood loss and they also did fit test and turned up with no result as everything was either negative or normal, the last time on his blood work. Reporter seriousness for all events was unspecified. The outcome for event joint pain in ankle, knee, fingers, wrists and elbows and couldn't lift left arm and it weighed a ton was recovering, tired and fatigued was not recovered and outcome for other events was unknown.  Product complaint: Description of complaint: While reporting adverse events with the Covid-19 vaccine, caller mentioned that he took acetaminophen that took very little results. Also mentioned that he had switched from Atorvastatin to Losartan about 6 months ago. He thought we was getting no benefit from the Atorvastatin, or maybe a little bit of discomfort. He was beginning to think in his own mind, that he wasn't getting any benefit or it was sort of fading in it's effect. He had been taking it for a long time. Does not have the box anymore. EXP: unknown. She had put him on iron supplements and it still hasn't shown any change in the anemia. Product strength and count size dispensed 40mg. Additional lot numbers: NDC, LOT, EXP: unknown, does not have the box or medication any longer. He has a new list. Is a sample of the product available to be returned, not provided. Packaging sealed and intact, not provided.