a C. diff infection; psoriatic arthritis; hay fever; vertigo; alopecia areatta; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from medical information team, Program ID. The reporter is the patient.  A 63-year-old male patient received BNT162b2 (BNT162B2), on 08Sep2020 as dose 2, single (Batch/Lot number: unknown) at the age of 61 years for covid-19 immunisation. The patient's relevant medical history and concomitant medications were not reported. Vaccination history included: BNT162b2 (Dose 1), administration date: 19Aug2020, when the patient was 61-year-old, for COVID-19 Immunization, reaction(s): "a C. diff infection", "psoriatic arthritis", "alopecia areatta", "hay fever", "vertigo". The following information was reported: ALOPECIA (non-serious) with onset Mar2021, outcome "unknown", described as "alopecia areatta"; CLOSTRIDIUM DIFFICILE INFECTION (medically significant), outcome "unknown", described as "a C. diff infection"; PSORIATIC ARTHROPATHY (medically significant), outcome "unknown", described as "psoriatic arthritis"; SEASONAL ALLERGY (non-serious), outcome "unknown", described as "hay fever"; VERTIGO (non-serious), outcome "unknown". Therapeutic measures were taken as a result of psoriatic arthropathy.  Clinical course: He had two shots and a booster of your COVID vaccines as part of the clinical trial, starting in Aug2020 and booster in Jul2021. Since he began the shots, he had been diagnosed with alopecia arietta, hay fever and, most recently, psoriatic arthritis. It was not been a good two years. Now need to see about getting a booster and as can imagine, he dont really want another Pfizer vaccine. Was there any problem to get a Moderna booster after 3 x Pfizer shots? He was afraid to take another Pfizer vaccine after the way his immune system responded. He states his immune system "attacked him". He now taking Xeljanz-started it last week for his psoriatic arthritis. His doctor suggested the alopecia might be genetic/hereditary, but he says his twin brother doesn't have it. Alopecia diagnosis was in Mar2021, and caller finished the trial in Jul2021, so the clinical trial people know about this information. Also had other things going on but cannot say those are of any relation, had a C. diff infection and vertigo, was such a bad 2 years, cannot say those were any relation. Had booster in Jul2021, and then one year after the booster the trial ended. Patient age: 63 years old currently, adverse events started, clarified and confirmed adverse events started 2 days before when hairdresser noticed the alopecia, caller clarified and confirmed caller was 61 years old when adverse events started. Confirmed caller reported all of this already to the clinical trial people. Report filed as follow up since caller confirmed caller reported all of this information to the clinical trial people. Confirmed no new events to report, just make sure the clinical trial people took note of the psoriatic arthritis because that was when the clinical trial was winding down and there were personnel changes in the clinical trial. Doses were done at Clinical Trials. Patient number was 1060. Patient sells packaging machinery for a living, sold packaging machinery and the vial anti-counterfeiting things to Pfizer. Patient's twin brother did Johnson and Johnson if Pfizer wanted to compare.. No additional information provided.  The information on the batch/lot number for BNT162b2 has been requested and will be submitted if and when received.