Shortness of breath; headache; Felt like at least 100 degree temp/slight fever; lack of appetite/completely lost appetite/No appetite; Body aches; Joint aches; Tiredness; Delirious; Chills; cold sweats; felt weak; flu-like symptoms; feel almost as miserable; can't taste food as well/lack of taste; diarrhea; This is a spontaneous report from a contactable consumer. A 68-year-old male patient received the first dose of bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, batch/lot and expiration date unknown), via an unspecified route of administration, administered in the right arm on 16Mar2021 at 10:20 as a single dose for covid-19 immunization. The patient's medical history included deep vein thrombosis (DVT) in from 2017 to 2017.  Patient always had swelling on the leg where he got the blood clot. The patient's veins in his leg were damaged and the doctor takes care of his legs. He has very poor blood flow in the affected leg, that all the fluids and waters, the heart was having a hard time pumping it back up. He uses compression stockings, physical therapy, and that he raises his legs in the evening. The caller mentioned that vessels in his affected leg are damaged for good. Patient was in a treatment facility for alcoholism. Patient reported that he hasn't had a drink in 2-3 years but still has to go to treatment, caller was released from the treatment facility because he got sick with COVID. Patient had Covid-19 on 15Dec2020 to 08Jan2021 (the side effects experienced after the first dose of the Covid-19 vaccine weren't as severe, that the real virus is pretty bad). Concomitant medications included blood thinners (unspecified) and a couple of other medications. Patient reported that he skipped some doses of his regular medications while he was feeling poorly. On 16Mar2021, the patient experienced delirious, chills, tiredness, body aches, joint aches, cold sweats, felt weak and flu-like symptoms. On 17Mar2021 patient had headache, felt like at least 100 degree temp/slight fever, lack of appetite/completely lost appetite/no appetite; can't taste food as well/lack of taste and diarrhea in Mar2021; and shortness of breath on an unspecified date. It was further reported that the adverse events that he was experiencing were as bad as his experience with COVID-19 except he could breathe. Gradually over the next 24 hours and the night of 16Mar2021, he started getting chills and fevers, getting very tired, and experiencing flu-like symptoms. He had fatigue, cold sweats, slight fever, headache, diarrhea, and the lack of taste or appetite. He said that his adverse events started 10 hours after getting vaccinated. For the next few days, he felt weak and had to exert a big effort to get out of bed. On the second day of vaccination, he developed diarrhea and completely lost appetite. Patient also reported that he experienced body aches. He experienced body aches and joint aches. Patient had no appetite, that he still hasn't eaten much the last few days but that he has started eating today. He described his experience to be severe but not severe enough for him to be hospitalized. He said that he missed 3 days of work because of his symptoms. It was on the 6th day since he got vaccinated and everything has subsided and he was getting his energy back but he is still recovering. Patient called his physician and the nurse he spoke with stated that the first 3 days following the Covid-19 vaccine the side effects could be very severe and that the side effects could continue over next 3 days. Caller reported that he is on the 6th day now since he got vaccinated and everything has subsided as he was starting to feel better, he was coming around, but it was not 100 percent. So patient was inquiring about the second dose of the product. The patient further mentioned that the side effects following the first dose of the Covid-19 vaccine caused him to feel almost as miserable as he did when he actually had Covid. Patient also stated that he was close to calling ambulance the night of 16Mar2021 when he began experiencing AEs. The patient was delirious, he wasn't sure what was going on, that he was trying to grab his phone and text but couldn't use his phone. Patient was wandering around his room. Patient would get cold sweats at night. Caller reported on the morning of 17Mar2021, he woke up soaked in sweat. Patient called his doctor's office that he just needs guidance on whether or not to get the second dose. The headache went away gradually and was gone probably late Saturday, 20Mar2021 or Sunday, 21Mar2021. for the event tiredness, patient stated that he's still trying to regain his full strength but, 22Mar2021 was the first day that he has been able to sit up and do things and that he hasn't had to lay down all day long. Felt like at least 100 temp, patient reported that he doesn't have a thermostat. He reported that he felt feverish at least the first 3 days following the first dose of the Covid-19 vaccine on 16Mar2021. Body aches/joint aches, reported that the body aches and joint aches have almost completely subsided. Patient stated that he doesn't really feel them, that he is 68 and at that age you're going to feel some aches regardless if you're sick or not. Caller reported that he can barely talk, that he still doesn't feel completely right. No appetite: caller reported that when his symptoms were severe that he did not want to eat. Caller reported that he did hydrate. The decreased appetite has improved but that's still not quite what it was. Caller reported that he was trying to eat to improve his energy level. Can't taste food as well, mentioned as that everything tastes the same, whether he eats a grape or a banana. Caller reported that he noticed that he wasn't able to taste food as well the third day after his symptoms began, but states it was improving. Patient reported that the diarrhea began on 18Mar2021 or 19Mar2021 and that he can't hold it too long. He ate cereal in the morning and immediately had to use the bathroom and it's getting a little better. Patient reported that he took 1000 mg of Tylenol for 2 to 3 days in a row. He took two 500 mg tablets three times because of headache and chills. Patient stated that the only difference between the side effects he experienced following his first dose of the Covid-19 vaccine and having the Covid-19 virus was that he doesn't have any problems struggling to catch his breath. The patient recovered from the events chills on 20Mar2021, headache and felt like at least 100 degree temp/slight fever in Mar2021; recovering from tiredness, body aches, joint aches, can't taste food as well/lack of taste, lack of appetite/completely lost appetite/No appetite and diarrhea; not recovered from shortness of breath; and unknown outcome for all the other events.