PASSED OUT/ UNCONSCIOUS; HAND STUCK OPEN; LOW POTASSIUM; ELECTROLYTES WERE OFF; INAPPROPRIATE TACHYCARDIA; URINATED ON HERSELF; FELL; HITTING THE HEAD ON WALL; EYE WAS TENDER; LEFT SIDE OF FACE WAS TENDER; LOW MAGNESIUM; HAND AND ARM NUMBNESS; WEAKNESS; FELT LETHARGIC; This spontaneous report received from a patient concerned a 34 year old female of unspecified ethnicity. The patient's height, and weight were not reported. No past medical history or concurrent conditions were reported. The patient was previously treated with covid-19 vaccine ad26. cov2. s (Dose number in series 1) (suspension for injection, route of admin not reported batch number: 205A21A, expiry: 21-SEP-2021) dose was not reported, 1 total, administered to left arm on 19-AUG-2021 for prophylactic vaccination.  It was unknown whether patient had any adverse events following vaccination covid-19 vaccine ad26. cov2.s. (Dose number in series 1). The patient received covid-19 vaccine ad26.cov2.s (Dose number in series 2) (suspension for injection, route of admin not reported, batch number: 211D21A, expiry: 11-APR-2022) dose was not reported, 1 total administered to  right gluteus medius on 19-JAN-2022 around 13:00 for prophylactic vaccination. No concomitant medications were reported.  On 19-JAN-2022, around 19:00 following vaccination with covid-19 vaccine ad26.cov2.s, the patient felt lethargic. The patient also experienced crazy/wild dreams and weakness. On 20-JAN-2022, the patient woke up around 04:00 with hand and arm numbness. The sensation slowly returned after running water on them. Her hand was stuck open and she had to work to close it. It took repeated attempts approximately 10 minutes to get the strength back and to close hand. The patient was lightheaded and had tachycardia/ heart was racing. The patient laid down and when she sat up she passed out hitting her head on wall in bedroom. The left side of face and eye was tender. The patient fell, was unconscious and urinated on herself. The patient was taken to the emergency department and had her blood work done which showed low magnesium level. It was replenished and patient was released. The patient felt lightheaded again with palpitations and was taken back to the Emergency room again. They said that her potassium was low and that her electrolytes were off. The patient was admitted to the hospital on 20-JAN-2022 and was discharged on 21-JAN-2022. The duration of hospitalization was 1 day. On JAN-2022, Laboratory data included: Brain CT (Computed tomogram) (NR: not provided) normal, Chest X-ray (NR: not provided) normal, EEG (electroencephalogram) (NR: not provided) normal, Echocardiogram (NR: not provided) normal. 4 days later the patient's resting heart rate went from 80 to 85 to be elevated to approximately 150. The physician put the patient on Metoprolol succinate 25mg daily and said it looked like a reaction to the vaccine. On 10-FEB-2022, the patient had an episode again with the elevated heart rate. The Metoprolol Succinate 25mg was increased to twice a day with breakfast and dinner. The patient reported that she had experienced serious adverse events with the company booster vaccine. The physicians weren't sure on what was happening. It was reported that the patient was going to visit the Rheumatologist. (Dose number in series 2). The action taken with covid-19 vaccine ad26.cov2.s was not applicable. The patient recovered from hand stuck open, felt lethargic, and low magnesium on 20-JAN-2022, and electrolytes were off, and weakness on 27-JAN-2022, was recovering from hand and arm numbness, had not recovered from inappropriate tachycardia, and the outcome of passed out/ unconscious, hitting the head on wall, eye was tender, left side of face was tender, fell, urinated on herself and low potassium was not reported. This report was serious (Hospitalization Caused / Prolonged).; Sender's Comments: V0:20220230270-Covid-19 vaccine ad26.cov2.s- passed out/ unconscious,hand stuck open, electrolytes were off,low magnesium ,inappropriate tachycardia,felt lethargic, hitting the head on wall, eye was tender, left side of face was tender, fell, urinated on herself ,low potassium .The event(s) has a compatible/suggestive temporal relationship, is unlabeled, and has unknown scientific plausibility. There is no information on any other factors potentially associated with the event(s). Therefore, this event(s) is considered unassessable. 20220230270-Covid-19 vaccine ad26.cov2.s-weakness,hand and arm numbness-  This event(s) is labeled per Agency and is therefore considered potentially related