Lower back pain that is like when you have a muscle spasm and it it so sharp; Lower back pain that is like when you have a muscle spasm and it it so sharp; The pain has been killing her; It is hard to walk and feels like a crippled lady; her arm has been itching/ It is the right arm but the left is also itching; She can't turn to the other side and can't do anything; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 42 year-old female patient received bnt162b2 (BNT162B2), administered in arm left, administration date 11Aug2021 (Lot number: EW0168) at the age of 42 years as dose 1, single for covid-19 immunisation. The patient's relevant medical history was not reported. There were no concomitant medications. Past drug history included: Depo provera, notes: She gets the Depo Provera shot every 3 months and hasn't gotten it in a couple of months. The following information was reported: BACK PAIN (non-serious), MUSCLE SPASMS (non-serious) all with onset 11Aug2021, outcome "not recovered" and all described as "Lower back pain that is like when you have a muscle spasm and it it so sharp"; PAIN (non-serious) with onset 11Aug2021, outcome "not recovered", described as "The pain has been killing her"; GAIT DISTURBANCE (non-serious) with onset 11Aug2021, outcome "not recovered", described as "It is hard to walk and feels like a crippled lady"; PRURITUS (non-serious) with onset 11Aug2021, outcome "not recovered", described as "her arm has been itching/ It is the right arm but the left is also itching"; LOSS OF PERSONAL INDEPENDENCE IN DAILY ACTIVITIES (non-serious) with onset Aug2021, outcome "unknown", described as "She can't turn to the other side and can't do anything". Therapeutic measures were taken as a result of back pain, muscle spasms, pain. Therapeutic measures were not taken as a result of pruritus.  Additional information: Patient got the Pfizer Covid Friday and, she has been having experience with lower back pain that is like when you have a muscle spasm and it it so sharp, where it hits you. The pain has been killing her ever since Friday. When she is walking, she is limped over like an old lady that is kind of limping over. She can't turn over when in bed. She can't turn to the other side and can't do anything. States that she was going to see if it got better because she drinks dark soda and was wondering if her back was hurting due to that. However, she had been drinking water. Since Friday, it had been to the point where if she was lying on her back, she can't even turn over. It hurts when she turns over and it hurts to walk. It started the day she got it, but later that evening. It is hard to walk and feels like a crippled lady. She is supposed to go back for another one (intent: dose 2) 01Sep2021. She got it on 11Aug2021. The pain has gotten worse. Treatment was reported as just Tylenol and BC powder. It has been kind of hard to walk and turn over when sleeping at night. She forgot to mention that her arm has been itching. The lower back on the left side is hurting. The itching is in her left arm. It is the right arm but the left is also itching. It started probably the same day as the pain. It was later on, after she got the shot. It still itches every now and then but has stayed about the same. When she scratches it so much, it is irritated when she itches it. No treatment was reported, patient just basically rubbed the arm down with alcohol. The pain was in the lower back and left side. It started from the left side and the pain shoots on the left side, then straight across her back. It is the same pain as she mentioned before. It has gotten worse and half of the time, she can't even sit up and get out of bed all the way. She has to roll over and grab the mattress, then rolls over. The pain shoots real heavy in her back. Some times she is about to cry. It hurts so bad to walk. She tries to walk to see if it can ease the pain down walking. She can't get her back straighten up and is limped over. She has a dentist appointment tomorrow. Patient thinks vaccine was given probably 1:00 or 2:00 in the afternoon, Friday. She gets the Depo Provera shot every 3 months and hasn't gotten it in a couple of months because she couldn't get there. She was going to make an appointment with Dr. withheld some time this week. No additional vaccines administered on same date. No Emergency Room and physician office visit. No prior vaccination (within 4 weeks). No AE(s) following prior vaccinations. No history of all previous immunization with the Pfizer vaccine considered as suspect. No additional vaccines administered on same date of Pfizer suspect. No family medical history relevant to AE(s). Relevant tests were reported as none.  No follow-up attempts are possible. No further information is expected.