throat felt tight; difficult to swallow; strange neck spasms; Experienced intense electrical zap sensations in brain; wake her out of sleep; nystagmus; floaters in eye; vertigo; Difficult to walk,; tendons sore; arms and legs completely "fell asleep"; internal vibrations in head like someone was constantly shaking head; dizziness; heart attack; heart inflammation; short PR syndrome; This is a spontaneous report received from a contactable reporter (Consumer or other non HCP). The reporter is the patient.  A 34 year-old female patient (not pregnant) received bnt162b2 (Pfizer COVID 19), administered in arm right, administration date 23Apr2021 16:45 (Lot number: EW0162) at the age of 34 years as dose 1, single for covid-19 immunisation. Relevant medical history included: "None." The patient's concomitant medications were not reported. No covid prior vaccination, no covid tested post vaccination. No allergies. No other vaccine in four weeks. The following information was reported: THROAT TIGHTNESS (hospitalization) with onset 23Apr2021 16:45, outcome "recovering", described as "throat felt tight"; DYSPHAGIA (hospitalization) with onset 23Apr2021 16:45, outcome "recovering", described as "difficult to swallow"; MUSCLE SPASMS (hospitalization) with onset 23Apr2021 16:45, outcome "recovering", described as "strange neck spasms"; ELECTRIC SHOCK SENSATION (hospitalization) with onset 23Apr2021 16:45, outcome "recovering", described as "Experienced intense electrical zap sensations in brain"; SLEEP DISORDER (hospitalization) with onset 23Apr2021 16:45, outcome "recovering", described as "wake her out of sleep"; NYSTAGMUS (hospitalization) with onset 23Apr2021 16:45, outcome "recovering", described as "nystagmus"; VITREOUS FLOATERS (hospitalization) with onset 23Apr2021 16:45, outcome "recovering", described as "floaters in eye"; VERTIGO (hospitalization) with onset 23Apr2021 16:45, outcome "recovering", described as "vertigo"; GAIT DISTURBANCE (hospitalization) with onset 23Apr2021 16:45, outcome "recovering", described as "Difficult to walk,"; TENDON PAIN (hospitalization) with onset 23Apr2021 16:45, outcome "recovering", described as "tendons sore"; HYPOAESTHESIA (hospitalization) with onset 23Apr2021 16:45, outcome "recovering", described as "arms and legs completely "fell asleep""; HEAD TITUBATION (hospitalization) with onset 23Apr2021 16:45, outcome "recovering", described as "internal vibrations in head like someone was constantly shaking head"; DIZZINESS (hospitalization) with onset 23Apr2021 16:45, outcome "recovering", described as "dizziness"; MYOCARDIAL INFARCTION (hospitalization) with onset 23Apr2021 16:45, outcome "recovering", described as "heart attack"; MYOCARDITIS (hospitalization) with onset 23Apr2021 16:45, outcome "recovering", described as "heart inflammation"; ELECTROCARDIOGRAM PR SHORTENED (hospitalization) with onset 23Apr2021 16:45, outcome "recovering", described as "short PR syndrome". The patient was hospitalized for throat tightness, dysphagia, muscle spasms, electric shock sensation, sleep disorder, nystagmus, vitreous floaters, vertigo, gait disturbance, tendon pain, hypoaesthesia, head titubation, dizziness, myocardial infarction, myocarditis, electrocardiogram pr shortened (hospitalization duration: 1 day). The events "throat felt tight", "difficult to swallow", "strange neck spasms", "experienced intense electrical zap sensations in brain", "wake her out of sleep", "nystagmus", "floaters in eye", "vertigo", "difficult to walk,", "tendons sore", "arms and legs completely "fell asleep"", "internal vibrations in head like someone was constantly shaking head", "dizziness", "heart attack", "heart inflammation" and "short pr syndrome" were evaluated at the physician office visit and emergency room visit. The patient underwent the following laboratory tests and procedures: blood test: everything came back normal; electrocardiogram: possible heart inflammation and short pr syndrome. Therapeutic measures were not taken as a result of throat tightness, dysphagia, muscle spasms, electric shock sensation, sleep disorder, nystagmus, vitreous floaters, vertigo, gait disturbance, tendon pain, hypoaesthesia, head titubation, dizziness, myocardial infarction, myocarditis, electrocardiogram pr shortened. Clinical course: Hours after receiving vaccination her throat felt tight and difficult to swallow and then had strange neck spasms. Experienced intense electrical zap sensations in brain, both day and night, they would also wake her out of sleep. She experienced nystagmus and floaters in eye. She had vertigo. Difficult to walk, tendons sore. Her arms and legs completely "fell asleep" for 1 month. She had internal vibrations in head like someone was constantly shaking head. (This is the symptom she still feel today that has not gone away. The degree has lessened but is still there. Reading is now extremely difficult for her, as well as having a fan in a room...these things make the dizziness/vibration in head feeling intensely return. This was debilitating and traumatizing. She felt like she was having a heart attack 3 weeks after symptoms began and went to hospital. EKG showed possible heart inflammation and short PR syndrome. She had extensive blood tests and everything came back normal.   Follow-up attempts are completed. No further information is expected.