bad back/her back went out; mild diarrhea; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team for a Pfizer sponsored program. The reporter is the patient.  A 69 year-old female patient received bnt162b2 (BNT162B2), administration date 04Mar2021 (Lot number: EN6205, Expiration Date: 30Jun2021) at the age of 69 years as dose 1, single for covid-19 immunisation. The patient's relevant medical history was not reported. The patient took concomitant medications. The following information was reported: BACK DISORDER (non-serious) with onset Mar2021, outcome "unknown", described as "bad back/her back went out"; DIARRHOEA (non-serious) with onset Mar2021, outcome "recovered" (2021), described as "mild diarrhea".  Additional information: This contactable 69-year-old female consumer (patient) reported for self that she had mild diarrhea after taking the vaccine which has resolved now. The patient was about the got the Pfizer BioNtech vaccine COVID 19. She got it on 04Mar and she has to return for the second dose 25Mar. Meanwhile, her back went out back doctor gave her give the name of the steroid haven't taken it yet Methylprednisolone tablets and its 4 mg and you have to take 6 tablet first reduce each one after total of 6 days just wanted to know interfere with the shot. Her first dose was the 04Mar2021.  She clarifies this was way before she got the vaccine, she was shoveling snow and she pulled her back out, that was before she got the vaccine so it had nothing to do with that she has been dealing with that for a while. She clarifies she did say her back went out since having the first dose, it had eased up for a while but went out again, she was taking Tumeric complex 500 mg which is an anti-oxident, a health dietary supplement and it eased it up but then she wanted her orthopedic doctor to look at it and he said to check with Pfizer before taking this. She clarifies before taking the steroid she mentioned. She took one of the Tumeric today, he told her the Tumeric should be fine but she wants to make sure that is okay too. Caller reporting her experience after the first dose of the Pfizer COVID 19 vaccine. She says her back went out. She clarifies she was dealing with this way before she got the vaccine, she was shoveling snow and she pulled her back out, that was before she got the vaccine so it had nothing to do with that she has been dealing with that for a while. She clarifies she did say her back went out again since having the first dose, it had eased up for a while, she was taking Tumeric complex 500 mg which is an anti-oxident, a health dietary supplement and it eased it up but then she wanted her orthopedic doctor to look. She took one of the Tumeric today. The patient had her 1st dose of vaccine last 04Mar2021 and 2nd dose is scheduled 25Mar. She had a back pain after the 1st dose and her orthopedic prescribed Methylprednisolone 4mg 6tab for 1st day and decreasing the following days. She has not taken the Methylprednisolone yet because she wanted to know if this will interfere with the vaccine.  No follow-up attempts are possible. No further information is expected.