pain also went to low pelvic area; Pain switched to left side of low back and has been excruciating/Still in a lot of pain; cannot drive, need help getting dressed & cannot get in and out of bed/cannot drive, need help getting dressed & cannot get in and out of bed/Sitting in recliner only; cannot drive, need help getting dressed & cannot get in and out of bed/cannot drive, need help getting dressed & cannot get in and out of bed/Sitting in recliner only; Severe pain in low back on Right side & pain down front leg to foot/Pain still on left side of low back & also moved in a straight line across to right side of back; Severe pain in low back on Right side & pain down front leg to foot;; walking greatly impaired; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 70 year-old female patient (not pregnant) received bnt162b2 (BNT162B2), administered in arm right, administration date 01Apr2021 15:15 (Lot number: ER 8734) at the age of 70 years as dose 2, single for covid-19 immunisation. Relevant medical history included: "Fibromyalgia" (unspecified if ongoing). Concomitant medication(s) included: MYRBETRIQ taken for urinary tract infection, start date: 02Mar2021, stop date: 15Mar2021; MACROBID [CLARITHROMYCIN] taken for urinary tract infection, start date: 06Mar2021, stop date: 12Mar2021. Vaccination history included: Bnt162b2 (lot number =EN 6207, administration time =02:45 PM, vaccine location =Right arm, dose number =1), administration date: 11Mar2021, when the patient was 70 years old, for COVID-19 Immunization, reaction(s): "Severe body aches", "chills", "Extreme pain in Right Knee". The following information was reported: BACK PAIN (non-serious) with onset 02Apr2021 10:00, outcome "recovering", described as "Severe pain in low back on Right side & pain down front leg to foot/Pain still on left side of low back & also moved in a straight line across to right side of back"; PAIN IN EXTREMITY (non-serious) with onset 02Apr2021 10:00, outcome "recovering", described as "Severe pain in low back on Right side & pain down front leg to foot;"; WALKING DISABILITY (non-serious) with onset 02Apr2021 10:00, outcome "recovering", described as "walking greatly impaired"; PAIN (non-serious) with onset 03Apr2021, outcome "recovering", described as "Pain switched to left side of low back and has been excruciating/Still in a lot of pain"; BEDRIDDEN (non-serious), LOSS OF PERSONAL INDEPENDENCE IN DAILY ACTIVITIES (non-serious) all with onset 03Apr2021, outcome "recovering" and all described as "cannot drive, need help getting dressed & cannot get in and out of bed/cannot drive, need help getting dressed & cannot get in and out of bed/Sitting in recliner only"; PELVIC PAIN (non-serious) with onset 07Apr2021, outcome "recovering", described as "pain also went to low pelvic area". The events "severe pain in low back on right side & pain down front leg to foot/pain still on left side of low back & also moved in a straight line across to right side of back", "severe pain in low back on right side & pain down front leg to foot;", "walking greatly impaired", "pain switched to left side of low back and has been excruciating/still in a lot of pain", "cannot drive, need help getting dressed & cannot get in and out of bed/cannot drive, need help getting dressed & cannot get in and out of bed/sitting in recliner only", "cannot drive, need help getting dressed & cannot get in and out of bed/cannot drive, need help getting dressed & cannot get in and out of bed/sitting in recliner only" and "pain also went to low pelvic area" were evaluated at the physician office visit. Therapeutic measures were taken as a result of back pain, pain in extremity, walking disability, pain, bedridden, loss of personal independence in daily activities, pelvic pain.  Additional information: Patient did not receive any other vaccines within 4 weeks prior to the COVID vaccine. Adverse event treatment was Chiropractic muscle massage/stim. Prior to vaccination, patient was not diagnosed with COVID-19. Since the vaccination, the patient had not been tested for COVID-19. Vaccine Facility information available. Ethnicity information is available. Race information is available. Location of injection information is available for all vaccines received on the same date.  No follow-up attempts are possible. No further information is expected.