her arm was a little sore; redness on her arm/the redness in her arm was the same side that the Pfizer COVID Vaccine was administered which was her left arm; sciatic pain; getting diarrhea pretty much right away after taking the steroid; This is a spontaneous report from a contactable consumer (patient). A 69-year-old female patient received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, solution for injection, Batch/Lot Number: EW0191), dose 1 via an unspecified route of administration, administered in Arm Left on 28May2021 3:00 PM (at the age of 69-year-old) as a single dose for COVID-19 immunization at grocery store. Medical history included ongoing diabetes diagnosed years ago, neck surgery in 2005 and 2007.Concomitant medications included Metformin two pills twice per day has been taking that a long time and only takes it long enough to get her sugar under control, Levothyroxine she takes one small pill first thing in the morning and has been taking it for about a year, Glyburide which is also a small pill started taking recently about a year ago, and Vitamin D and has been using that for years (Vitamin D 50,000 units once per week).Patient did not receive any additional vaccines administered on same date of the Pfizer vaccine and within 4 weeks of vaccination. Patient did not have any family medical history. Patient stated after her 1st dose she had a redness on her arm after the shot which did not happen right away; stated the redness began a couple of weeks ago and she does not know if the redness was because of the Pfizer COVID vaccine or because of the steroid she had to take for the sciatic nerve problem. Stated the redness was not really bothering her until after she started taking the steroid and the arm did not itch or anything but was just red. Patient further stated the redness began probably 2-3 days later but she was unsure of dates and it could have been there prior to that time after she got the Pfizer COVID Vaccine, but she did not notice it then and her arm was a little sore but did not bother her otherwise; stated the redness was her whole upper left arm and was gone she guesses 3-4 days later after it began. Stated the redness in her arm was the same side that the Pfizer COVID Vaccine was administered which was her left arm. Stated the sciatic nerve problem was diagnosed about the same time she got the Pfizer COVID vaccine and had been working a lot of overtime and sitting on a sweater on her seat and the uneven sweater caused the sciatic nerve problem; stated she took the steroid that she does not know the name of to help with the sciatic pain when it began and was getting diarrhea pretty much right away and had to stop taking the steroid; stated the diarrhea got better and went away as soon as she stopped taking the steroid. Patient had an appointment in May and had an appointment once per year with her diabetes doctor. Patient was not visited emergency room or physician office for any adverse events. There was no investigation assessment and no relevant tests. Second dose of vaccine was scheduled on 18Jun2021. The outcome of event sciatic pain was unknown and recovered for other events on an unspecified date in 2021.  Information on lot/batch number was available. Additional information has been requested.