blood sugar raised up; being unbelievably freezing cold; This is a spontaneous report from a contactable consumer (patient self).  A 79-year-old female patient received the second dose of BNT162B2(PFIZER-BIONTECH COVID-19 VACCINE), via an unspecified route of administration, administered in arm right on 09Feb2021 10:30 (Lot number was reported as ELO1265 or EL01265, the patient was not sure if the third digit was letter or number; unknown why this Lot was 7 digits when first dose Lot was 6 digits) at the age of 79 years old, at single dose for covid-19 immunisation. Medical history included diabetes from 2018 and ongoing, family Medical History includes: All diabetics stage I and stage II, ongoing scoliosis, 60 degrees of scoliosis diagnosed when she was age 75 years; assumed it was congenital, ongoing asthma when she was around 40 years of age, ongoing thyroid disorder when she was around 45 years of age, diagnosed allergies, compromised immune status, respiratory illness, genetic / chromosomal abnormalities, endocrine abnormalities (including diabetes) and obesity, back pain, celiac disease. Concomitant medications included insulin lispro (HUMALOG) taken for diabetes from 2019 and ongoing; sitagliptin (JANUVIA) taken for diabetes from 2019 and ongoing, because of celiac disease-she cannot take others; she wondered if getting vaccine may have knocked this out of her system and it is having to build back up, prednisone taken for back pain from 27Jan2021 to 01Feb2021, She knew prednisone can increase blood sugar levels. The patient previously took the first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, lot number: EL3248), via an unspecified route of administration, administered in arm right on 19Jan2021 14:00 at the age of 79 years old, at single dose for covid-19 immunisation, and previously took second shingles vaccine for immunization and described as a bruiser, she was really sick, the vaccination date of second shingles vaccine was reported as maybe 1.5 years before 12Feb2021. There is no other vaccination within four weeks prior to the first administration date of the suspect vaccine BNT162B2. No other vaccines were administered on same date with the BNT162B2. The patient experienced very high blood sugar levels and being unbelievably freezing cold on 10Feb2021 after she was administered the second dose. She called to ask if anyone else has reported very high blood sugar levels after getting the vaccine. Her normal blood sugar level in the mornings was about 122; normal blood sugar level in the evenings was about 180. She had not gone to physician's office, emergency room or been hospitalized for this event at this time. As long as she stayed under 300 and she was ok she knew. Blood sugar level was 164 on 10Feb2021 morning, exact time unknown, blood sugar level was 247 on 10Feb2021 evening, exact time unknown, blood sugar level was 182 on 11Feb2021 morning, exact time unknown, blood sugar level was 296 on 11Feb2021 evening, exact time unknown, blood sugar level was 172 on 12Feb2021 morning, exact time unknown. The patient had to use insulin lispro more than normal in response to very high blood sugar levels. Increased doses provided as took 13 units this morning: 12Feb2021; 14 units evening of 11Feb2021: Started with 10 units, but when got blood sugar level of 296 she took 4 more units. The patient experienced unbelievably freezing cold on 10Feb2021 about 13:00 or 13:30. She woke up around 13:00 or 13:30 and was unbelievably freezing cold. She was freezing. She wrapped up in a bathrobe, 2 blankets and her husband; took a couple of Tylenol and Benadryl and this event subsided. She recovered completely from event within about 1 hour of onset on 10Feb2021. Event described as the craziest thing. The events did not result in emergency room visit or physician office visit or hospitalized. The outcome of the event high blood sugar levels was unknown, outcome of the event unbelievably freezing cold was recovered on 10Feb2021.  Information about lot/batch number has been requested.