couldn't sleep; dry skin; allergic reaction; rash on his chest, arms, and back that was itchy (like hives); the rash had become painful; rash on his chest, arms, and back that was itchy (like hives); This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP).  A 87 year-old male patient received bnt162b2 (BNT162B2), intramuscular, administered in arm right, administration date 07Oct2021 15:30 (Lot number: FD0809) at the age of 87 years as dose 3 (booster), single for covid-19 immunisation. Relevant medical history included: "A-fib" (unspecified if ongoing); "low thyroid" (unspecified if ongoing), notes: Hypothyroid; "milk intollerance" (unspecified if ongoing). Family history included: "history of Polyps" (unspecified if ongoing), notes: history of Polyps (his dad had colon cancer). Concomitant medication(s) included: ELIQUIS taken for atrial fibrillation (ongoing); LEVOTHYROXIN taken for hypothyroidism (ongoing); METAMUCIL [PLANTAGO OVATA]; CALCIUM; GLUCOSAMINE; FISH OIL; IODINE; METOPROLOL taken for atrial fibrillation (ongoing). Vaccination history included: Bnt162b2 (prev dose product=COVID 19, prev dose brand=Pfizer, prev dose brand unknown=False, prev dose lot number= EM9809, prev dose lot unknown=False, prev dose administrator route=Intramuscular, prev dose administration date=10Feb2021 , prev dose dose number=2, Anatomical site of injection: Arm), administration date: 10Feb2021, when the patient was 86 years old, for Covid-19 immunization; Bnt162b2 (prev dose product=COVID 19, prev dose brand=Pfizer, prev dose brand unknown=False, prev dose lot number= =EL8982, prev dose lot unknown=False, prev dose administrator route=Intramuscular, prev dose administration date=21Jan2021 , prev dose dose number=1, Anatomical site of injection: Arm), administration date: 21Jan2021, when the patient was 86 years old, for Covid-19 immunization. The following information was reported: INSOMNIA (non-serious) with onset 10Oct2021, outcome "not recovered", described as "couldn't sleep"; DRY SKIN (non-serious) with onset 10Oct2021, outcome "not recovered", described as "dry skin"; HYPERSENSITIVITY (non-serious) with onset 10Oct2021, outcome "not recovered", described as "allergic reaction"; RASH PRURITIC (non-serious) with onset 10Oct2021, outcome "not recovered", URTICARIA (non-serious) with onset 09Oct2021, outcome "recovered" (31Oct2021) and all described as "rash on his chest, arms, and back that was itchy (like hives)"; RASH (non-serious) with onset 10Oct2021, outcome "not recovered", described as "the rash had become painful". The events "couldn't sleep", "dry skin", "allergic reaction", "rash on his chest, arms, and back that was itchy (like hives)", "rash on his chest, arms, and back that was itchy (like hives)" and "the rash had become painful" were evaluated at the physician office visit and emergency room visit. Therapeutic measures were taken as a result of insomnia, dry skin, hypersensitivity, rash pruritic, urticaria, rash.  Additional information: Patient was received his recent Covid-19 vaccine in Public Health Clinic/Veterans Administration facility. Patient did not received any other vaccine in four weeks of covid-19 vaccination. Patient did not tested for Covid-19 since vaccination. patient was not diagnosed with Covid-19 before vaccination. Patient did not have any known allergies. in other medication's Multivitamin also reported. The Physician there gave patient a Methopredinsolone (6 day) and thought it was something ingested as an allergic reaction. Patient also received Prednisone for treatment. Patient went to the urgent care the next day as the welts & itchy got progressively worse & covered more of his body. Urgent care gave prednisolone pack (4mg 21 tablets (6,5,4,3,2,1). Hives kept spreading & only got marginally better on the prednisolone. Patient went a few days after to Dermatologist who prescribed a full prednisolone 10 mg (4,3,2,1 4 days) and steroid cream (2weeks) after that the hives did not come back.   No follow-up attempts are possible. No further information is expected.