Severely high blood pressure; heart fluttering and racing; heart fluttering and racing; swollen veins; twitching muscles; pins and needles; lost 30 pounds in less than 1 month; spilling ketones; can't get control of my type 1 diabetes that has always been well controlled; can't get control of my type 1 diabetes that has always been well controlled; This is a spontaneous report received from a non-contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 30 year-old female patient (not pregnant) received bnt162b2 (BNT162B2), administered in arm left, administration date 09Aug2021 16:00 (Lot number: EW0178) at the age of 30 years as dose 1, single for covid-19 immunisation. Relevant medical history included: "Type 1 diabetes." (unspecified if ongoing), notes: ever since vaccine I can't get control of my type 1 diabetes that has always been well controlled. The patient had no known allergies. Prior to vaccination, the patient was not diagnosed with COVID-19. Concomitant medication(s) included: NOVOLOG; TRAZODONE. The patient did not receive any other vaccines within 4 weeks prior to the COVID vaccine. The following information was reported: BLOOD PRESSURE INCREASED (caused and prolonged hospitalization) with onset 11Aug2021 12:00, outcome "not recovered", described as "Severely high blood pressure"; CARDIAC FLUTTER (caused and prolonged hospitalization), PALPITATIONS (caused and prolonged hospitalization) all with onset 11Aug2021 12:00, outcome "not recovered" and all described as "heart fluttering and racing"; VEIN DISORDER (caused and prolonged hospitalization) with onset 11Aug2021 12:00, outcome "not recovered", described as "swollen veins"; MUSCLE TWITCHING (caused and prolonged hospitalization) with onset 11Aug2021 12:00, outcome "not recovered", described as "twitching muscles"; PARAESTHESIA (caused and prolonged hospitalization) with onset 11Aug2021 12:00, outcome "not recovered", described as "pins and needles"; WEIGHT DECREASED (caused and prolonged hospitalization) with onset 11Aug2021 12:00, outcome "not recovered", described as "lost 30 pounds in less than 1 month"; BLOOD KETONE BODY INCREASED (caused and prolonged hospitalization) with onset 11Aug2021 12:00, outcome "not recovered", described as "spilling ketones"; DIABETES MELLITUS INADEQUATE CONTROL (caused and prolonged hospitalization), DIABETES MELLITUS (caused and prolonged hospitalization) all with onset 11Aug2021 12:00, outcome "not recovered" and all described as "can't get control of my type 1 diabetes that has always been well controlled". The patient was hospitalized and prolonged hospitalization for blood pressure increased, cardiac flutter, palpitations, vein disorder, muscle twitching, paraesthesia, weight decreased, diabetes mellitus inadequate control, diabetes mellitus (start date: 2021, discharge date: 2021, hospitalization duration: 4 day(s)); for blood ketone body increased (hospitalization duration: 4 day(s)). The events "severely high blood pressure", "heart fluttering and racing", "swollen veins", "twitching muscles", "pins and needles", "lost 30 pounds in less than 1 month", "spilling ketones", "can't get control of my type 1 diabetes that has always been well controlled" and "can't get control of my type 1 diabetes that has always been well controlled" were evaluated at the physician office visit and emergency room visit. The patient underwent the following laboratory tests and procedures: blood ketone body: (11Aug2021) spilling ketones; blood pressure measurement: (11Aug2021) severely high blood pressure; sars-cov-2 test: (25Nov2021) negative, notes: Nasal Swab; weight: (11Aug2021) lost 30 pounds, notes: lost 30 pounds in less than 1 month. Since the vaccination, the patient had been tested for COVID-19. Therapeutic measures were not taken as a result of blood pressure increased, cardiac flutter, palpitations, vein disorder, muscle twitching, paraesthesia, weight decreased, blood ketone body increased, diabetes mellitus inadequate control, diabetes mellitus. No follow-up attempts are possible. No further information is expected.