This is a spontaneous report received from a contactable reporter (Consumer or other non HCP), Program ID: Private. The reporter is the patient. A 73-year-old female patient received BNT162b2 (BNT162B2), in 2021 as dose 1, single (Batch/Lot number: unknown), in left arm, as dose 2, single (Batch/Lot number: unknown), in right arm and as dose 3 (booster), single (Batch/Lot number: unknown), in left arm for covid-19 immunisation. The patient's relevant medical history included: "Vaginal delivery" (unspecified if ongoing), notes: 3-"perfect with no pain medication"; "Blood pressure" (unspecified if ongoing). Concomitant medication(s) included: TOPROL taken for blood pressure abnormal (Additional Information for Other medicines Toprol: Confirmed was taking at time got the first dose. However, no longer taking this. She stopped about  a year ago, it will be a year this January as to when she stopped); TYLENOL; HYDROCHLOROTHIAZIDE. The following information was reported: MYASTHENIA GRAVIS (hospitalization, medically significant, life threatening) with onset 2021, outcome "recovering"; HYPOKALAEMIA (medically significant), outcome "unknown", described as "doesn't hold potassium any longer"; ALOPECIA (non-serious), outcome "unknown", described as "lost almost all her hair". Clinical course: the patient stated she had not been sick a day in her life. The patient taught school, took every vaccine, and never been sick; there was nothing wrong with her before getting the vaccine. The patient stated that as soon as she got the vaccine "everything went downhill, it was terrible". The patient clarified the reason she was hospitalized was because she was having trouble talking, seeing, breathing, walking, could not swallow, and eat. The patient went to the hospital by ambulance and was admitted right away. The patient was diagnosed with myasthenia gravis at the hospital. Regarding the myasthenia gravis: the exact date officially diagnosed was unknown. "It was probably last summer, beginning of last summer" (at the time of the initial report). The patient, however, had symptoms before then, but did not know what it was. The patient further clarified the symptoms she first had was diplopia. The patient thought she had an eye infection, however, it proceeded to get much worse. The patient ended up with myasthenia crisis. The patient added she was in the intensive care unit (ICU) for ten days and was then transferred to a step-down unit. The patient felt they saved her life. The exact dates for when the events occurred and was admitted to the hospital were unknown. It was either at the end of Dec2021 or beginning of Jan2022. This occurred after she was officially diagnosed with Myasthenia Gravis in 2021. At the time of the report, the patent still had muscle spasms and was on medication every day. The event was responsible for 83,000 dollars worth of nurse's bills because they had to come to her house during COVID. The patient lived alone due to the passing of her husband. The patient knew the events she was experiencing were from the vaccine. The patient did not want to get it, but her children made her. The myasthenia gravis had affected her nervous system, she knew it was something in the shot. The patient was told she had to take medication for the rest of her life. Treatment included: pyridostigmine- 60mg tablet 3 times a day. Mentioned she may have to increase the dose because she was having problems and need them. Indication: Help send message the nerve to how to react. Product Manufactured by ZYDUS; also on steroids, prednisone. The patient lost almost all her hair. She had beautiful head of hair. Prednisone- 10mg and 5mg daily, take 15mg total a day; colecalciferol (VITAMIN D3) 1000 Units a day; hydrochlorothiazide 25mg tablet daily (provided initially as treatment, but then later stated she was already taking prior to getting the COVID-19 VACCINE); potassium chloride (KLOR-CON) 20 MeQ powder put in 4 ounces of water daily because doesn't hold potassium any longer; calcium chloride; glucose; magnesium chloride; potassium chloride; sodium chloride; sodium lactate (PEDIALYTE)-as needed for muscle spams that she had pretty bad and this help keep it at bay. The patient noted that she will not get anymore vaccinations. The patient added, she used to ice skate, play tennis, do everything until she had the vaccine. Now she could no longer do that. She was not even able to play with her grandchildren. PFIZER COVID-19 VACCINE: First Dose: believed it was Nov or Dec2021 administered in left arm; Second Dose: Given in right arm, unknown dose. Administered the regular time told to wait, stated as she was not sure guesses the 6-8 months (as reported). The date of the Pfizer Covid-19 Booster dose was given, but she did not have lot/exp./NDC. Investigations: "Had lab work done and testing antibodies for Myasthenia Gravis. At first could not figure out what was going on. Had blood test and then said had antibody present for Myasthenia Gravis". At end of the report, the patient mentioned she would not wish this on anyone. She never had the flu vaccine, and never had the flu. She had a "good immune system until now". The patient underwent the following laboratory tests and procedures: Blood test: antibody present for Myasthenia Gravis. Therapeutic measures were taken as a result of myasthenia gravis, hypokalaemia, alopecia. The information on the batch/lot number for BNT162b2 has been requested and will be submitted if and when received.