Sweating; hand felt really hot; body aches; low grade fever; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from medical information team.  A 88 year-old female patient received bnt162b2 (BNT162B2), administered in arm left, administration date 14Aug2021 10:30 (Lot number: EW0169) at the age of 88 years as dose 2, single for covid-19 immunisation. Relevant medical history included: "Hypertension" (unspecified if ongoing), notes: Verbatim: Hypertension for a long time; "Hyperthyroidism" (unspecified if ongoing), notes: Verbatim: Hyperthyroidism for a long time. Concomitant medication(s) included: METOPROLOL taken for hypertension (ongoing); HYDROCHLOROTHIAZIDE taken for polyuria (ongoing); METHIMAZOLE taken for thyroid disorder (ongoing). Vaccination history included: Bnt162b2 (Dose: 1st, Vaccine Name: Pfizer COVID 19 vaccine, Lot Number / Expiry Date: ER8736/unknown, Route, Anatomical Location: injection/left arm), administration date: 24Jul2021, when the patient was 88 years old, for COVID-19 immunisation, reaction(s): "arm soreness", "low grade fever"; Flu shot (patient had a fever with the flu shot a couple of years ago. Caller has no product or information and does not know NDC, lot or expiration date.), for Immunization, reaction(s): "fever". The following information was reported: PAIN (non-serious) with onset 14Aug2021, outcome "not recovered", described as "body aches"; PYREXIA (non-serious) with onset 14Aug2021, outcome "recovered" (2021), described as "low grade fever"; FEELING HOT (non-serious) with onset 22Aug2021 17:00, outcome "recovered" (2021), described as "hand felt really hot"; HYPERHIDROSIS (non-serious) with onset 23Aug2021 17:00, outcome "recovered" (2021), described as "Sweating". Relevant laboratory tests and procedures are available in the appropriate section.  Additional information: Patient received her second dose of the Pfizer covid vaccine on 14Aug2021. She experienced body aches and low grade fever. Body aches went away next day but then it came back. Caller stated body aches comes and goes and they were "not getting any less". Per Safety agent patient had Hyperthyroidism and she is taking methimazole for it. Caller stated with first dose of the Pfizer covid vaccine she and her mother had similar reaction like arm soreness and low fever then it went away, after the second dose she had body aches, which went away but for her mother it was not going away. Caller wanted to know about how long mRNA stays in the body. This report was not related to a study or programme. Reporter seriousness was Unspecified for body aches on and off since the vaccination, Low grade fever, hand felt really hot and Sweating. The patient was taking Pfizer COVID 19 vaccine because of everybody getting it. The patient had Metoprolol, Hydrochlorothiazide and Methimazole for a long time. The patient was taking Hydrochlorothiazide as a diuretic drug. Methimazole was taking for thyroid disorder. Patient had hypertension and hyperthyroidism for a long time. Investigation Assessment: No. It was reported that she got her second dose of the vaccine 14Aug2021 and then she had body aches; and a low fever but not reading high enough for fever; the body aches are all over; third day she was okay and the symptoms went away but last week in the afternoon she felt achy again; then yesterday on the eight day after the vaccine at about 5PM she felt the same symptoms; body aches, no fever, but her hand felt really hot; then this morning she started sweating and felt okay. Again today she felt the body aches. Confirmed the body aches have been coming and going since the second dose. Patient said they were just like they were the first day. They called and asked her PCP before she got the vaccine if his mother could get the vaccine and they said generally yes. All events did not require emergency room visit or physician office visit. Patient did not have any Prior Vaccinations within 4 weeks. Family Medical History was none. Relevant Tests were none. Caller just wanted to know was it kind of normal.   No follow-up attempts are possible. No further information is expected.