lower digestive issues; She did not sleep at all that night; she was not hungry all day; a slight fever; joint pain; headache; Sick; Muscle hurt in her left arm after injection administered; This is a spontaneous report from a contactable consumer (Patient). A 65-years-old female patient received bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, solution for injection; Batch/Lot number: not reported), via an unspecified route of administration, in left arm on 09Mar2021 (at 08:15-08:20) as dose 1, single (at the age of 65-years-old) for COVID-19 immunization. Medical history included parkinson's disease from 2014 and ongoing, onset date about 7 years ago. She just has slight tremors in her left arm and hypothyroidism from 2003 and ongoing, onset date about 18 years ago. History of all previous immunization with the Pfizer vaccine considered as suspect (or patient age at first and subsequent immunizations if dates of birth or immunizations are not available) was reported as None. No Additional vaccines administered on same date of Pfizer suspect and prior within 4 weeks. Her whole family had diabetes but she does not have diabetes, she skipped it. Concomitant medication(s) included carbidopa, levodopa (CARBIDOPA/LEVODOPA) 100mg taken 3 times daily and amantadine (AMANTADINE), 100mg taken once daily both taken for parkinson's disease from an unspecified start date to 11Mar2021; levothyroxine sodium (LEVOTHYROXINE SODIUM), 112mcg taken once daily taken for an unspecified indication from an unspecified start date to 11Mar2021. All taken when vaccine administered. Has not taken since 11Mar2021 because medication was not staying in anyway. On 09Mar2021, the patient experienced sick and muscle hurt in her left arm after injection administered. On 10Mar2021, headache, on 11Mar2021, joint pain but no fever, on 12Mar2021 a slight fever and she was not hungry all day, did not eat dinner. She had really bad joint pain, a pounding headache and a slight fever around 99 degrees, on 13Mar2021, she felt better that morning. She got up, had a little bit of breakfast and went out shopping. She came home and said maybe she did too much because her muscles were aching, her joints were hurting, and she had a bad headache again. That night around 21:00 she had onset of lower digestive issues, going to the bathroom constantly; she has never gone to the bathroom like that in her whole life. She was in and out of the bathroom until 14Mar2021 around 07:00. She did not sleep at all that night of 13Mar2021-14Mar2021. She had a raging headache, it was horrible. She switched between Advil and Tylenol for the headache. 14Mar2021, morning all she wanted to do was sleep. She slept until almost 15:00 and had a headache still. She mentioned being slow. Outcome described as she thought she was done with being sick but this morning, 15Mar2021 she has the headache again and is back in the bathroom. She felt like she has a really bad case of the flu. She has not had any shortness of breath or anything like that. On an unspecified date the patient underwent lab tests and procedures which included digestive enzyme test result was lower and fever 99 degrees. Patient did not visit to Emergency Room/ Physician Office or hospitalized for AE. Treatment was received for headache. The outcome of the events was unknown.   No follow-up attempts are possible; information about lot/batch number cannot been obtained.