Painful headache; the random joint pain/ pain in my left knee; fatigue; deep shuttering chills; asymmetric pain/my upper right maxilla/my lower left mandible; asymmetric pain/the upper and lower dental arches; brain fog the vague confusion; brain fog the vague confusion this went on for weeks and it was severe enough; I was unable to speak except for incomplete sentences/ I could only utter phrases and struggle to think of the best words for my thought; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 62 year-old male patient received bnt162b2 (BNT162B2), administered in deltoid left, administration date 18May2021 (Lot number: EW0165) at the age of 62 years as dose 2, single for covid-19 immunisation. Relevant medical history included: "Eczema" (unspecified if ongoing), notes: Verbatim: Eczema; "bad concussion" (unspecified if ongoing). Concomitant medication(s) included: DUPIXENT taken for eczema. Vaccination history included: Bnt162b2 (Dose: 1, around 10:30 , Lot: EW0170, It was left shoulder both times.), administration date: 27Apr2021, when the patient was 62 years old, for COVID-19 immunization, reaction(s): "no issues with the first vaccine". The following information was reported: HEADACHE (non-serious) with onset May2021, outcome "recovering", described as "Painful headache"; ARTHRALGIA (non-serious) with onset May2021, outcome "recovering", described as "the random joint pain/ pain in my left knee"; FATIGUE (non-serious) with onset May2021, outcome "recovering", described as "fatigue"; CHILLS (non-serious) with onset May2021, outcome "recovering", described as "deep shuttering chills"; PAIN IN JAW (non-serious) with onset May2021, outcome "recovering", described as "asymmetric pain/my upper right maxilla/my lower left mandible"; TOOTHACHE (non-serious) with onset May2021, outcome "recovering", described as "asymmetric pain/the upper and lower dental arches"; FEELING ABNORMAL (non-serious) with onset May2021, outcome "recovering", described as "brain fog the vague confusion"; CONFUSIONAL STATE (non-serious) with onset May2021, outcome "recovering", described as "brain fog the vague confusion this went on for weeks and it was severe enough"; APHASIA (non-serious) with onset May2021, outcome "recovering", described as "I was unable to speak except for incomplete sentences/ I could only utter phrases and struggle to think of the best words for my thought". Therapeutic measures were not taken as a result of headache, arthralgia, fatigue, chills, pain in jaw, toothache, feeling abnormal, confusional state, aphasia.  Additional information: He had no issues with the first vaccine however, had some very diversified and extended reactions to the second vaccine. He spoke with his Physician and he spoke with other care providers and they all told him the same thing that it was experience of a signal of a strong immune response (further not clarified) which he understood and also that because that was something that was telling new that we all go on learning about it. So, here's the thing he was on schedule to have his booster shot and about a week and a half but before, he followed through with that appointment, he wanted to ask because of the nature of the reactions, that he had and their severity at times whether this was a good idea whether it should be possibly put off or perhaps a different COVID vaccine might be in order but we will tell him what we think. So, here's the thing in addition to the very common this is from his second vaccine the first one as he said, was no reaction and in response to the second vaccine, in addition to the painful headache, the random joint pain, the pronounced fatigue and the deep shuttering chills. He also had asymmetric pain for example, one day it was his upper right maxilla, the next day it was his lower left mandible, the next day it was the upper and lower dental arches, this went on for days and then as abruptly as they appeared they faded off quickly fortunately following this and actually bleeding through it ongoing with it, he shouldn't say bleeding that's not a good term to use in this discussion, there was no blood. He had what they call the, brain fog the vague confusion this went on for weeks and it was severe enough that it was similar to many years ago when he had a bad concussion because he was unable to speak except for incomplete sentences (further clarification unknown). He could only utter phrases and struggle to think of the best words for his thought and he had a good deal of mid task confusion like he was 'glandless' to say, he would suddenly stop in a room at his job and wonder what he was doing why he was holding the things that he was, what it was that he was needing to do and it would come to him but there was that kind of confusion. He also had pain in his left knee so that it was 'feel' upper (incomplete sentence)." The symptoms went on for three months and gradually faded off. The patient did not have prior vaccination (4 weeks).   Follow-up attempts are completed. No further information is expected.