TREMORS; BRAIN FOG; SLEEP ARE BEING AFFECTED; ANXIETY; FEEL MY HEARTBEAT THROUGHOUT MY BODY; FLOATERS IN VISION; SKIN DOES NOT FEEL RIGHT; WEIRD FEELINGS IN LIMBS; BALANCE IS OFF; MOTOR SKILLS ARE NOT 100%; CONSTANT HEADACHES; LOW BLOOD PRESSURE; CHEST PAIN AND  STUFF; ELEVATED HEART RATE WHILE RELAXING; FEEL DIZZY; HEART BEAT POUNDING THROUGH BODY / RACING HEART; NAUSEA; RINGING IN EARS; MUSCLE SPASMS; NORMAL PAIN AT INJECTION SITE PAIN; This spontaneous report received from a patient concerned a 26 year old male. The patient's height, and weight were not reported. The patient's concurrent conditions included: non smoker, and non alcoholic, and other pre-existing medical conditions included: The patient has no known drug allergies and the patient had no medical issues prior to being vaccinated. The patient has no drug abuse and no illicit drug usage. The patient received covid-19 vaccine ad26.cov2.s (suspension for injection, route of admin not reported, batch number: 042A21A, and batch number: 042A21A expiry: UNKNOWN) dose was not reported, administered on 02-APR-2021 for prophylactic vaccination. No concomitant medications were reported.  On 02-APR-2021, the patient experienced normal pain at injection site pain. On 24-MAY-2021, the patient experienced muscle spasms. On 26-MAY-2021, the patient experienced ringing in ears. On 15-JUN-2021, the patient experienced nausea. On 17-JUL-2021, Laboratory data included: Oxygen saturation (NR: not provided) 99 %, and Pulse rate (NR: not provided) 74 beats per minute. On 26-JUL-2021, the patient experienced low blood pressure. On 26-JUL-2021, the patient experienced chest pain and stuff. On 26-JUL-2021, the patient experienced elevated heart rate while relaxing. On 26-JUL-2021, the patient experienced feel dizzy. On 26-JUL-2021, the patient experienced heart beat pounding through body / racing heart. On 02-SEP-2021, the patient experienced constant headaches. On 03-SEP-2021, Laboratory data included: Echocardiogram (NR: not provided) All okay. On 27-SEP-2021, Laboratory data included: Blood test (NR: not provided) Everything was normal, Chest X-ray (NR: not provided) Normal results, and Echocardiogram (NR: not provided) All okay. On 01-OCT-2021, the patient experienced floaters in vision, skin does not feel right, weird feelings in limbs, balance is off, and motor skills are not 100%. On 20-OCT-2021, Laboratory data included: Echocardiogram (NR: not provided) All okay, and Holter monitoring (NR: not provided) like an extra heart beat. On 01-NOV-2021, Laboratory data included: Blood test (NR: not provided) Everything was normal, CT scan (NR: not provided) normal, and Echocardiogram (NR: not provided) All okay. On 04-DEC-2021, Laboratory data included: MRI (NR: not provided) normal. On 17-DEC-2021, the patient experienced feel my heartbeat throughout my body. On an unspecified date, the patient experienced tremors, brain fog, sleep are being affected, and anxiety. Laboratory data (dates unspecified) included: Blood pressure (NR: not provided) LOW, and Heart rate (NR: not provided) normal. Treatment medications (dates unspecified) included: prednisone, and alprazolam. The action taken with covid-19 vaccine ad26.cov2.s was not applicable. The patient recovered from heart beat pounding through body / racing heart on 26-JUL-2021, feel my heartbeat throughout my body on 17-DEC-2021, and normal pain at injection site pain on 04-APR-2021, was recovering from elevated heart rate while relaxing, had not recovered from ringing in ears, nausea, floaters in vision, skin does not feel right, weird feelings in limbs, balance is off, motor skills are not 100%, constant headaches, low blood pressure, chest pain and stuff, feel dizzy, muscle spasms, tremors, brain fog, and anxiety, and the outcome of sleep are being affected was not reported. This report was non-serious.