Headache; Brain fog; Insomnia; High anxiety; Was so hungry; Achy / Soreness; Sore arm; Low grade fever; This is a spontaneous report from a contactable consumer (patient herself). A 68-year-old female patient received bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Solution for injection, Batch/Lot Number: EW0173, Expiry Date: Unknown), dose 1 via an unspecified route of administration, administered in Arm Right on 18Aug2021 at 13:30 (at the age of 68-year-old) as dose 1, single for covid-19 immunisation. Medical history included Hashimotos disease from 1995 and ongoing: This is with chronic sub actuate thyroiditis. It's where it makes her every 4-5 years her thyroid go hyper and would be very, very sick, Irregular Heartbeat: Stated it's harmless. She is not using a pacemaker or anything. Her heart will race or skip at times, insomnia: historically insomnia is something that she has that comes and goes for years. Historical vaccine included Smallpox vaccine for Immunization with had no reaction and tetanus shot for Immunization and experienced big goose egg in arm: She also had a tetanus shot and only thing can remember is having big goose egg in arm from the shot. The patient had within four weeks prior to the first administration date of the suspect vaccine reported as None. She clarified that, her reaction details. She initially stated she indicated she had the usual the first day. She had a headache and brain fog. She had the headache the second day as well. She had three things that were weird and not normal. She was told she would be tired, but she was not. She got insomnia instead. She was also highly anxious, like having anxiety. It was almost to the point of having a panic attack. This continued for over a week after getting the vaccine. This was something that has never been heard of before. Also, almost immediately after the vaccine she got so hungry. She was so hungry she could not get enough to eat for several days. She would eat and then been starving hungry again half an hour later. She did not want to take anything for her symptoms, but it got to the point where she had to take something. She tried not take Advil or Tylenol because she was told not to the first 48 hours because want the vaccine to work. However, the third night she wanted to sleep and so she took something for the insomnia and she slept good. She then felt like everything was okay after this third day. However, afterwards it was like every other day she would get symptoms. She also was achy real bad, like had the flu. She could not sleep, would be anxious again, and have this bad hunger. This was going on ten days. The first and second night was really bad. She took something for sleep the third night because her body needed sleep. She knew she needed sleep to make the vaccine work. She added, historically insomnia is something that she has that comes and goes for years. However, for some reason this seemed to be worse after the first week of getting the vaccine. She had to take the medication for insomnia for 3-4 nights straight to help try and sleep normally. The insomnia still comes and goes, but does not know if it is still from the vaccine at this point. The first week after the vaccine she knows the insomnia was from the vaccine because she had high anxiety along with it along with the bad hunger. Started the day got the shot. It was like within athe first half hour. She did not expect high anxiety to happened. She expected to be tired because was told when got the shot would be tired and and probably get a headache. However, she never got tired. She wished she did get tired. She still gets that anxiety feeling at times, but she thinks it was due being scared to get the second shot. She was so hungry, bad hunger: the day of the shot she drank a lot of fluids and ate a big breakfast before going to get the shot. She wanted to make sure she was hydrated and ate before getting vaccinated. However, a few minutes after getting the vaccine she was so hungry. She had hunger pains. She told the nurse and asked the nurse about it and the nurse said she had never heard of that. That still comes and goes, but it was better. She did mention that to the doctor who also ordered blood work. She had an annual check up and blood work was taken then. So now she had another blood test two weeks after the shot to check and make sure nothing has changed, making sure nothing inflamed or messing up since the vaccine. Achy real bad was started as clarified initially the fifth day after the vaccine. After the third day she had felt wonderful and thought yay she was done with the side effects, but by the the fifth day she had body aches. It was all over her body. She had it in her neck, arms. She also added, and stated initially, she did have a sore arm the first 3-4 days after the vaccine,but did not think anything of it. She did not have a rash or real pain, just the soreness afterwards. Now it is achy feeling. She was achy in her back, all over badly. She later added soreness, her neck, arms, shoulders, upper back was really sore and achy the first two days,but went away the the third day. Her muscles were sore. She broke down and took Tylenol because at first was not trying to take anything for pain. She also added, she had a lowgrade fever, that was off and on the first day. She never took anything for it because it was just 99 degreees. She commented she has not needed medication for her thyroid in years. She has not had a vaccine in 50 years. She was nervous to get the covid vaccine because did not want to throw it off. She stated that, when she was kid, 5 years old she remembers getting the Smallpox vaccine and had no reaction. She also had a tetanus shot and only thing can remember is having big goose egg in arm from the shot. She does not remember any other shot. On 18Aug2021, the patient experienced headache, brain fog, insomnia, high anxiety, was so hungry, achy / soreness, sore arm, low grade fever. The patient underwent lab tests and procedures which included Blood work: unknown results on 02Sep2021, but does not have results back yet and fever: 99 degreees on 18Aug2021, low grade fever. Therapeutic measures were taken as a result of insomnia and take the medication for insomnia for 3-4 nights straight to help try and sleep normally. The outcome of the event Brain fog was recovered on 18Aug2021, Sore arm was recovered on Aug2021, Headache was recovered on 19Aug2021; Was so hungry was recovering; Achy/Soreness and Low grade fever was unknown and High anxiety and Insomnia was not recovered.  Follow-Up (10Sep2021): Follow-up attempts are completed. No further information is expected.