Shingles; This is a spontaneous report from a contactable consumer or other non hcp (patient). A 49-year-old female patient received first dose of bnt162b2 (PFIZER-BIONTECH COVID-19 MRNA VACCINE, solution for injection, Batch/Lot Number: EN6208) via an unspecified route of administration, administered in arm left on 10Mar2021 13:00 (at the age of 49-year-old) at dose 1, single for covid-19 immunisation. Medical history included ongoing type 1 diabetes (Verbatim: type 1 diabetes, Other Conditions: had for 40 years). Prior Vaccinations within 4 weeks was none. Adverse event following prior vaccinations were none. Concomitant medications were not reported. On an unspecified date in Mar2021 the patient experienced shingles. Reporter, reporting on the Covid vaccine and who explains she took her first dose on 10Mar2021 and her second on 31Mar2021. She has been a type 1 diabetic for 40 years and does have some mild to moderate complications from diabetes but nothing too serious. After the first shot she got shingles, so she dealt with that. This made her think twice about getting the second dose but she took it anyway because she didn't want to get COVID. Shortly after the second shot, strange issues with her blood sugars that have progressively gotten worse. She is having severe low blood sugars that are untreatable and that take 3-5 hours to able stabilize even with taking in sugars and candies. The shot has seem to lowered her insulin level and everything a person can do to level it out doesn't seem to help. It is just bizarre. She doesn't know if she should thank us or not but it does worry her that the low blood sugar doesn't respond to sugar for treatment like normal. She is also having issues with the recommendation that the immunocompromised should take a third shot and she is not sure if she could handle her blood sugars going any lower. The reporter remarks that her primary doctor told not to take the vaccine and since she decided to, he is not helping her with the problems afterward. Her main question is, she wants to know if we are aware of this happening with type 1 and what to do. She knows it is out there as she has read blogs about this for other type 1 diabetics having this issue. First dose: 10Mar2021 at around 1:00pm in the left arm, Lot: EN6208. Second dose: Lot: ER8733 given around 1:15pm-1:30pm in the right arm. The reporter confirms she has no specific patient details for the statement regarding other type 1 diabetics who have had this issue, she was reading blogs under an article. She can provide the web address if requested. Primary Healthcare: declines to provide, she almost called the board oh him as he chastised her for getting the vaccine and she thought it was a poor choice. After the first dose she got shingles: this was about 10 day after the first shot, the blisters lasted 4 days, virus 7 days. It has resolved at this point. Issues with her blood sugars: she noticed this about a week after the second dose; she saw some strange roller coaster high to low numbers that were different than her normal. The low blood sugars started in mid Apr2021 and has progressively gotten worse and way more symptomatic to where is has stopped responding to treatments. She does not take vaccines, she was immunized when young but not since then, not in 25 years. She passed out 2 Wednesdays ago, she doesn't know the date but luckily her parents were at her home and gave her IM glucagon so therefore she did not have to go to the emergency room. There have been multiple times when she was close to passing out and her husband has had to put sugar under her tongue because she was so out of it. This is the most bizarre thing in her life. She knows type 1 diabetes can't be reverse and she still sometimes has high sugars when she has had to over treat for hours at a time, so her pancreas isn't working but whatever in the vaccine, we might want to look into curing diabetes. She doesn't know what is in it that is changing the way insulin is synthesized in her system but it would be nice to know how to handle this issue after getting the vaccine. Adverse event did not require a visit to emergency room, physician office. Outcome of the event was resolved on an unspecified date in Mar2021.  Follow-up (19Aug2021): Follow-up attempts are completed. No further information is expected.