high blood pressure (mentioned 173/93 but was not able to confirm); burning and tingling sensation in the leg/Burning in her legs, and at times it goes further up into the her body; burning and tingling sensation in the leg/ tingling go to her head at times/ tingling went up further in her body; chills; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient.  An 82-year-old female patient received BNT162b2, BNT162b2 omi ba.4-5 (BNT162B2, BNT162B2 OMI BA.4-5), on 13Dec2022 as dose 5 (booster), single (Lot number: GJ6738) at the age of 82 years for covid-19 immunisation. The patient's relevant medical history included: "blood clot in her leg", start date: 2013 (unspecified if ongoing). There were no concomitant medications. Vaccination history included: BNT162b2 (Dose 1, LOT: Unknown), administration date: 13Jan2021, when the patient was 80-year-old, for COVID-19 immunization, reaction(s): "COVID-19"; BNT162b2 (Dose 2, LOT: Unknown), administration date: 04Feb2021, when the patient was 80-year-old, for COVID-19 immunization, reaction(s): "COVID-19"; BNT162b2 (Dose 3, LOT: Unknown), administration date: 04Oct2021, when the patient was 81-year-old, for COVID-19 immunization, reaction(s): "COVID-19"; BNT162b2 (Dose 4, Unknown arm, LOT: Unknown), administration date: 20Jul2022, when the patient was 82-year-old, for COVID-19 immunization, reaction(s): "COVID-19". The following information was reported: BLOOD PRESSURE INCREASED (non-serious), outcome "unknown", described as "high blood pressure (mentioned 173/93 but was not able to confirm)"; BURNING SENSATION (non-serious), outcome "unknown", described as "burning and tingling sensation in the leg/Burning in her legs, and at times it goes further up into the her body"; PARAESTHESIA (non-serious), outcome "unknown", described as "burning and tingling sensation in the leg/ tingling go to her head at times/ tingling went up further in her body"; CHILLS (non-serious), outcome "unknown". Relevant laboratory tests and procedures are available in the appropriate section.  Additional information: Caller was asking regarding Pfizer COVID vaccine. When asked, she mentioned all three were "Pfizer shot". Caller was not able to verify if that was the bivalent shot. Had a blood clot in her leg in 2013 that never did dissolve, but this seems to be a lot worse than after she had the clot. This burning and tingling went up further in her body. Tingling and burning is in both legs. As per caller it was her booster shot or third dose and she want to know if burning ang tingling sensation in the leg was a side effect of the vaccine. She also added that she was experiencing chills and high blood pressure (mentioned 173/93 but was not able to confirm). Caller also expressed that she did not have problem with the other vaccine. No Investigations: No, Other Products: No. Have been having some problems with her legs. Burning in her legs, and at times it goes further up into the her body. Wondering if this has anything to do with the Pfizer shots. Legs get very hot and tingling. Has had the burning and tingling go to her head at times. She has shrunk as she has aged. Has been going on for at least 3 weeks. Had vaccine on 13Dec2022. Burning and tingling started around that time. Guessing about the time. Can't remember exactly when it started. It was worse at night. Adverse event does not required visit to: Emergency room or Physician's office.