diagnosed with myasthenia gravis; could not breathe; eye started closing halfway;had an eye problem; she is shrinking and her height is now 5'1'' or 5'2''.; tumor; This is a spontaneous report from a contactable consumer (patient). A 77-years-old female patient received bnt162b2 (BNT162B2), first dose via an unspecified route of administration at the age of 76-years-old on 22Feb2021 (Lot Number: EN6198) as single dose, second dose via an unspecified route of administration, administered in right arm at the age of 76-years-old on 15Mar2021 10:50 (Lot Number: EN6204) as single dose for covid-19 immunisation. Medical history included blood pressure and cholesterol (had been on the same medications for years and takes one blood pressure pill at a low dosage of 20mg and takes cholesterol medication and takes 20mg of that and those are her only prescription medications). Concomitant medication included vitamin d. She stated the next doctor took one look and said yes it was myasthenia gravis and told her if she has trouble breathing to go to the emergency room immediately; stated that next Sunday night she thought she was going to die and could not breathe and drove to the emergency room and she was admitted to the hospital for 10 days and they did five plasma exchanges. She stated she thought this came on all of a sudden but thought about it and was noticing little things and she was extremely healthy and does not have any problems and has no heart issues or diabetes or anything and noticed maybe she would breathe a little heavier when she was doing something and started having incontinence which she had never had before and the incontinence is not all the time and is very subtle and would come and go and the more she thought about it later she now realized that this may be working on her longer than she realized. Caller stated she was shrinking and her height was now 5'1'' or 5'2''; stated the listed HCP was her regular doctor and she sees another doctor for this condition and her primary care doctor was not really involved in this diagnosis or anything; states she was diagnosed by withheld and her eye started closing halfway and thought she had an eye problem and went to an eye doctor and saw three different eye doctors in 4 days and they thought it was her retina and the retina surgeon took a look and said there is nothing wrong with her eyes they were perfect and was thinking it was myasthenia gravis and sent her for emergency blood tests and she saw another HCP; she stated the next doctor took one look and said yes it is myasthenia gravis and told her if she has trouble breathing to go to the emergency room immediately; stated that next Sunday night she thought she was going to die and could not breathe and drove to the emergency room and she was admitted to the hospital for 10 days and they did five plasma exchanges. Caller stated she had been home all week and is going tomorrow to visit the surgeon and they think it was her sinus and she has a tumor and they think that is what is causing her eyes to not open right and she was hoping they will take that out. Caller stated they admitted her to the hospital and she saw a neurologist also and states for the breathing it is slightly a little bit better and she was on another medication and on about three different medications; no further details provided by the caller. She stated her eyes were open yesterday and she really couldn't control it and they pop open and go shut and she couldn't drive and can not be by herself at this time. She stated she thought this came on all of a sudden but thought about it and was noticing little things and she was extremely healthy and does not have any problems and has no heart issues or diabetes or anything and noticed maybe she would breathe a little heavier when she was doing something and started having incontinence which she had never had before and the incontinence is not all the time and is very subtle and would come and go and the more she thought about it later she now realized that this may be working on her longer than she realized. The events required a visit to emergency room and physician office.  The patient was hospitalized for the events from 20Sep2021 to 30Sep2021. The outcome of the event dyspnoea was recovering; of the other events was unknown.  Follow-up (13Oct2021): Follow-up attempts are completed. No further information is expected.