dehydration; low blood sugar; fatigued; Appetite; Pneumonia; Night sweats; Headache; Couldn't eat anything; Wheezing; migraine; Light, hacking cough; Fever/ 103.9 degrees; Chills; No more than 2-3 hours of sleep per night for 5 nights; Short of breath; This is a spontaneous report from a contactable consumer (patient). A 51-years-old male patient received the second dose of BNT162B2 (COVID-19 VACCINE), via an unspecified route of administration, administered on left arm on 14Apr2021 10:45 (Batch/Lot number was not reported) at age of 51 years as single dose. The patient medical history and concomitant medications was reported as none. Historical v for covid-19 immunisation accine included the first dose of BNT162B2 administered on left arm on 24Mar2021 at age of 51 years for covid-19 immunisation and experienced no issues. Patient reported that after the second dose of the Covid-19 vaccine, he had a fever for 8 days and was diagnosed with pneumonia on 21Apr2021. Patient reported that he was tested for both Covid-19, Influenza A, and Influenza B twice on 19Apr2021 and 21Apr2021 and tested negative for Covid-19 and influenza both times. Patient reported that he had no pre-conditions and that he was feeling great the night before he received the second dose of the Covid-19 vaccine, 13Apr2021. Patient reported that he was planning to go to work following the second dose of the Covid-19 vaccine on 14Apr2021. He began running a low-grade fever (102 degrees) on 14Apr2021 after receiving the Covid-19 vaccine and then his temperature flared up to 103.5 degrees on 15Apr2021. Fever: He received the second dose of the Covid-19 vaccine at 10:45 on 14Apr2021 and about 2:00 in afternoon on 14Apr2021 was the first fever that was significant. The last fever he had on 21Apr2021, his temperature was 103.9. He was put on antibiotics for pneumonia. He contacted the on-call nurse for his company. The on-call nurse advised him to see a doctor on Saturday, 17Apr2021.He went to the doctor on Monday, 19Apr2021. The doctor only ran a Covid-19 swab for testing and a flu swab. His doctor did not do blood work and stated that the patientwas experiencing an ill effect of the Covid-19 vaccine and sent the patient home. He went back to the doctor on Wednesday, 21Apr2021. When he went back to the doctor, the staff performed a chest X-ray and ran 4 different blood works to see what the patient had. The second Covid-19 test that he received on 22Apr2021 was performed with both the rapid test and the test that was sent off. Both Covid-19 tests came back negative. SARS test on 22Apr2021 was negative. 508-3 High Sensitivity CRP: One of his numbers that was parts per liter, 3 is considered to be high risk and he had 300 (300+) of whatever it was on 21Apr2021. He went back to the physician and was given another steroid shot an additional prescription. He had been back to the doctor 3 times since then. Fever: His fever was 103 consistently after 15Apr2021. 508-3 High sensitivity CRP: This value showed abnormal. The results said that relative risk was greater than 1 mg/liter and high was greater than 3. 1000 CBC with auto differential on 21Apr2021: The abnormal results were red blood cells measured at 4.38; hematocrit measured at 13.82; MCHC measured at 36.4; Neutrophils measured at 84; Lymphocytes measured at 12; and absolute Lymphocytes measured at 0.57. He wore a Garmin and that it recorded that he received no more than 2-3 hours of sleep per night for 5 nights. He didn't know anything about pneumonia previously and that he had specifically told his physician's office everything about what he was experiencing. He told his physician about the wheezing in his chest (on 17Apr2021), cough (on 16Apr2021), fever, and chills (on 14Apr2021). His physician told him it was a normal reaction to the Covid-19 vaccine and sent him home on 19Apr2021. He then consulted Google and started to realize that his side effect were very atypical. Wheezing: When he breathed really light, the crackling would continue. If he breathed shallow, the wheezing was audible but if he breathed deeply, it was not. The pneumonia was in the left side of his chest. He was still being treated for the pneumonia. He has his last dose of medication tomorrow, 27Apr2021, and that he was also being released to go back to work tomorrow. Cough: He had a little cough that would then go away. The cough began late Friday, 16Apr2021. It was interesting because it wasn't a main part of the illness. The cough was just kind of a hacking cough every once in awhile. The cough was not continuous like go and go and go and stop. The cough came, went away for awhile, then came again.The cough being worse was relative. He was coughing more than he did on Wednesday 21Apr2021, Thursday 22Apr2021, and Friday 23Apr2021. The cough was consistent more so at night when he laid down. He would probably say that it was a different feel towards the cough but it was still a cough. The cough was still the same volume but not the same effect. Headache (on 18Apr2021): He had been waking up with headaches in the morning and going to bed with them at night. On Wednesday, 21Apr2021, the headache was due to dehydration from the fever and night sweats. Once he got away from the dehydration headaches, the headache got better but he had woken up with a headache the last few days and had a headache at bedtime a few nights in a row. The headache was usually a frontal headache and this morning, 26Apr2021, the headache was toward the back of his head. The headaches last a few hours until he started moving around. On Saturday, 17Apr2021 he experienced a migraine that would not go away. He didn't usually get migraines. The migraine lasted hours if not for a day and that the headache was something furious. Sunday 18Apr2021 was pretty much the same thing with the headache. Because of the massive fever, he couldn't eat anything at all (17Apr2021). The headache was mostly due to low blood sugar and dehydration. Appetite: His appetite improved after his second doctor's appointment on 21Apr2021. The second provider was a lot more straightforward and advised the patient that he needed to start taking care of himself and trying to force himself to eat. He forced himself to eat on 21Apr2021 and by Thursday 22Apr2021, he had a full appetite and was craving food again. Shortness of breath (Apr2021): Patient reported that the shortness of breath was just from being fatigued. Patient reported that he got out of breath from going up and down the stairs. He was unsure when the shortness of breath began because he was moving very little, but that he noticed the shortness of breath on Monday, 19Apr2021 when he got up to go to the doctor.On Friday 16Apr2021 and Saturday 17Apr2021, he had a really good break.On Friday 16Apr2021 from 9 AM to 1 PM, he had no fever and it was like the sun was coming out, then the fever hit really hard. The same thing happened on Saturday, 17Apr2021, but the fever free period lasted maybe a little longer. His fever returned and that the afternoon of Saturday 17Apr2021 was the worst he had been the entire time. On 13Apr2021 to get away from arm soreness, he did a few laps in the pool. On 13Apr2021 he had a new best time on the 100 in freestyle in the pool and that he felt really strong going into 14Apr2021 to get his second dose of the Covid-19 vaccine. There was nothing that would have indicated that he had anything going on before getting the second dose of the Covid-19 vaccine. Up until Saturday, 17Apr2021, he had only been taking Motrin and just taking 2 tablets. He had no break in between fevers and chills and was not able to get ahead of the fever with the Motrin. There was a long stretch where the Motrin wasn't working and his temperature didn't get below 100 for several days. He tried to cycle acetaminophen in beginning Saturday 17Apr2021 to try to get the acetaminophen in between the Motrin doses.  When he went back to the doctor on 21Apr2021, the provider told him that he could take 3 to 4 Motrin tablets at a time but not to exceed 4 doses per day. He never took more than 3 tablets. Motrin was generic ibuprofen. Night sweats (on 21Apr2021): The last couple of nights have been the same. He had a fan on to keep a little cooler and that it was 61 degrees outside and he felt the night sweats. He had a buckwheat mat that was cool that he put on the floor to stay cooler with the night sweats. Come Thursday, 22Apr2021, he said we're done with this and he couldn't sleep from it (Apr2021). Last night, 25Apr2021, he knew that he had night sweats because he was sweating at night and the temperature in the room was 64 degrees. AEs did not require a visit to Emergency Room. AEs required a visit to Physician Office for fever, wheezing, cough, shortness of breath, chills. Outcome of events was unknown.