black outs; Lightheaded; equal librium issues from top of stair, I'd fall going downstairs like my muscles would give out or I couldn't control their movement or lose balance; equal librium issues from top of stair, I'd fall going downstairs like my muscles would give out or I couldn't control their movement or lose balance; equal librium issues from top of stair, I'd fall going downstairs like my muscles would give out or I couldn't control their movement or lose balance; equal librium issues from top of stair, I'd fall going downstairs like my muscles would give out or I couldn't control their movement or lose balance; fatigue; seeing stars as if I was dehydrated; seeing stars as if I was dehydrated; muscle tightness in my back, legs, buttocks to the point they would lock up, stop working; pain would be unbearable walking 10' to 15' (I was up to ½ mile walking prior to this) without any notice and I could not move; pain would be unbearable walking 10' to 15' (I was up to ½ mile walking prior to this) without any notice and I could not move; Spasms throughout body I cannot control; previous migraines are more frequent; This is a spontaneous report from a contactable consumer or other non hcp (patient). A 52-year-old non-pregnant female patient received second dose of bnt162b2 (BNT162B2 PFIZER-BIONTECH COVID-19 mRNA VACCINE, solution for injection, Batch/Lot number: ER8733), via an unspecified route of administration, in right arm on an unspecified date in 2021 (at the age of 52-years-old) as dose 2, single for COVID-19 immunisation. The medical history of the patient included splenectomy, Lyme, PE, GERD, REFLUX, IBS/C, PTSD, Chronic Pain back/neck, arthritis, migraines and joint pain. The patient was allergic to penicillin and wasp venom. The concomitant medications of the patient included topiramate (TOPIRAMATE), omeprazole (OMEPRAZOLE) and losartan potassium (LOSA [LOSARTAN POTASSIUM]). The patient previously received the first dose of BNT162B2(solution for injection, Batch/Lot number: EN6205), via an unspecified route of administration, in right arm on 03Mar2021 at 10:00 (at the age of 52-years-old) as single dose for COVID-19 immunisation. The patient was not pregnant at the time of vaccination. The patient did not receive any other vaccines within 4 weeks prior to the covid vaccine. Prior to vaccination, the patient was not diagnosed with covid-19. Since the vaccination, the patient not been tested with covid-19. On 05Apr2021 at 13:00, the patient experienced black outs, lightheaded, equal librium issues from top of stair, i'd fall going downstairs like my muscles would give out or i couldn't control their movement or lose balance, fatigue, seeing stars as if i was dehydrated, muscle tightness in my back, legs, buttocks to the point they would lock up, stop working, pain would be unbearable walking 10' to 15' (i was up to ½ mile walking prior to this) without any notice and i could not move, spasms throughout body i cannot control, previous migraines are more frequent. The patient stated she would stay in bed up to 6 hours with ice on her neck in pure darkness. That was continued till the day. More in her hips than other joints but the muscle tightness continued. The only thing that has gone less frequent to le ran out of room. The event were reported as non-serious by the reporter. The events did not resulted in death or life threatening or prolonged hospitalization or Disabling/Incapacitating or Congenital anomaly/birth defect. No treatment was received. The outcome of the events was reported as not resolved.