It is radiating to her back and neck.; It is radiating to her back and neck.; Stress; Constant tightness radiating up  to her shoulder into her neck and to the other side of her arm; Constant tightness radiating up  to her shoulder into her neck and to the other side of her arm; Headache; She still feels injection site pain; Pain in her upper chest; Her chest feels eggy; Pain in her left arm; Difficult to move her arm; previous dose: 3 Moderna, dose 4: BNT162b2; This is a spontaneous report received from a contactable reporter(s) (Nurse) from medical information team. The reporter is the patient.  A 57-year-old female patient received BNT162b2 (BNT162B2), on 28Jun2022 as dose 4 (initial pfizer dose; booster), single (Lot number: FM7553) at the age of 57 years intramuscular, in left arm for covid-19 immunisation. The patient's relevant medical history included: "Blood pressure high" (ongoing). Concomitant medication(s) included: NIFEDIPINE taken for blood pressure measurement (ongoing). She does take Blood pressure pills, but has for a long time. Vaccination history included: Moderna (DOSE 1), for COVID-19 immunization; Moderna (DOSE 2), for COVID-19 immunization; Moderna (DOSE 3), for COVID-19 immunization; Flu vaccine, for immunization. The following information was reported: INTERCHANGE OF VACCINE PRODUCTS (disability) with onset 28Jun2022, outcome "not recovered", described as "previous dose: 3 Moderna, dose 4: BNT162b2"; MOVEMENT DISORDER (disability) with onset Dec2022, outcome "unknown", described as "Difficult to move her arm"; PAIN IN EXTREMITY (disability) with onset Dec2022, outcome "not recovered", described as "Pain in her left arm"; BACK PAIN (non-serious), NECK PAIN (non-serious), outcome "unknown" and all described as "It is radiating to her back and neck."; STRESS (non-serious), outcome "unknown"; MUSCLE TIGHTNESS (non-serious), JOINT STIFFNESS (non-serious), outcome "unknown" and all described as "Constant tightness radiating up  to her shoulder into her neck and to the other side of her arm"; HEADACHE (non-serious), outcome "unknown"; VACCINATION SITE PAIN (non-serious), outcome "unknown", described as "She still feels injection site pain"; CHEST PAIN (non-serious), outcome "unknown", described as "Pain in her upper chest"; CHEST DISCOMFORT (non-serious), outcome "unknown", described as "Her chest feels eggy". The events "pain in her upper chest" and "her chest feels eggy" required physician office visit. The patient underwent the following laboratory tests and procedures: Antibody test: unknown results; cardiac workup: unknown results. Therapeutic measures were taken as a result of pain in extremity, movement disorder, back pain, neck pain. Additional information: She had the COVID vaccine and she is having problems. She is experiencing pain on her left arm. It is radiating to her back and neck. It is getting worse. She got the COVID vaccine by Pfizer on 28Jun2022. This was her first Pfizer vaccine. She had 3 Moderna before. The pain started around Dec2022. It wasn't strong then, but is now getting worse. It is affecting her whole upper body. She has pain and stress. It is a constant tightness radiating up to her shoulder into her neck and to the other side of her arm. At night is her biggest problem. It is very difficult to move her arm, and it is painful. She can't do normal stuff. It is difficult to stretch her arm up. She had no effect in the beginning when she first took it. Her arm never got the feeling all there. It doesn't subside much with tylenol. It is getting worse day in and day out. It gives her a headache. It was an awkward feeling at first, and then progressed. It is now excruciating. She got the Pfizer COVID vaccine in her left arm, and her left arm is the same arm she is experiencing this in. She went to the doctor before because of pain in her upper chest. Her chest feels eggy, and now she sees the relation to where it is. Her doctor was concerned and did a cardiac workup. She still feels injection site pain. Seriousness reported as disabling for her. Sender's Comments: Based on the information in the case report, a possible causal relationship between the events interchange of vaccine products, movement disorder, pain in extremity  and suspect drug BNT162B2 cannot be excluded.  The impact of this report on the benefit/risk profile of the Pfizer product is evaluated as part of Pfizer procedures for safety evaluation, including the review and analysis of aggregate data for adverse events. Any safety concern identified as part of this review, as well as any appropriate action in response, will be promptly notified to regulatory authorities, Ethics Committees, and Investigators, as appropriate.