significant dissociation; developed hot flashes in sternum; anxiety; dizziness and light headedness; muscle weakness/lower leg feel shaky and weak and tingly; depersonalization; shakey/lower leg feel shaky and weak and tingly; mild nausea; arm pain; The caller would touch her hand but couldn't feel her hands, it was like they weren't hers; lower leg feel shaky and weak and tingly; hand on that same side was painful, but not unbearable, just uncomfortable; emotional; tearful; felt completely overwhelmed; This is a spontaneous report from a contactable consumer. A 56-Year-old female consumer (patient) reported that she received the first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Batch/lot number: EJ1686), via unspecified route at left upper arm on 12Jan2021 about 9:15am at single dose for COVID-19 immunization. Vaccination facility type was hospital. Medical history and concomitant drugs were not reported. Weight: 175-180 lbs. No additional vaccines administered on same date of the Pfizer suspect vaccine. No prior vaccinations within 4 weeks. Past drug included rivaroxaban (XARELTO) been using the product more than 10 years and never had a problem with it, she didn't think that was related to her experience. Patient received first vaccine yesterday 12Jan2021. 45 minutes after receiving vaccine (12Jan2021 10 AM), she developed hot flashes in sternum (flushing sensation in her sternum or upper chest area. It was like when she had a dye injected), anxiety, dizziness/ light headedness, muscle weakness, significant dissociation, depersonalization, shakey, mild nausea, arm pain. The patient explained that this was why she was in the MRI scanner (Jan2021). This came a couple of times yesterday and had not been experienced this today (13Jan2021). It (dizziness) was ongoing and sporadic and had happened couple times yesterday and today. There were a few hours yesterday 12Jan2021 where she felt like herself but then it all started again last night. The patient reported feeling disassociated from her body, this was within about 20 minutes of the flushing and went in and out of being more or less alarming. She stated she felt disconnecting from where she was and space she was in, mentally. She knew where she was but could feel no connection to where she was or her body. The patient would touch her hand but couldn't feel her hands, it was like they weren't hers. This was during the half hour of the events occurring. She had mild nausea, this started not long after the flushing and it came and went a little bit but it was not too troublesome. The patient felt disconnect from her body and had shakiness like her lower leg feel shaky and weak and tingly. This happened on and off since the episodes started. The patient reported she slept great and had a few hours yesterday where she felt good. Her arm was tender, this might have been yesterday but she thought it was this morning and was only tender to touch. The hand on that same side was painful, but not unbearable, just uncomfortable. The patient apologized for being emotional and tearful. She felt completely overwhelmed. She couldn't believe that she put herself in this position and she was perfectly fine before the shot. She did contact her doctor. No AE required a visit to emergency room/ physician office. There had been no treatment, she didn't know what to do. She remarked she was not going back for the second dose. Outcome of event dizziness was not recovered, and the rest of events was unknown.