almost fainted/it may have been a vasovagal reaction; dizzy/light headed; Tachycardia; Bradycardia; Fatigue extreme; Felt like she had a mild case of Covid; felt like she had a mild case of Covid; sore arm; fever; headache; This is a spontaneous report from a contactable Nurse (patient). A 40-years-old female patient received bnt162b2 (BNT162B2, Pfizer-BioNTech Covid-19 mRNA Vaccine, Solution for injection, Batch/Lot number EW0198), dose 1 via an unspecified route of administration, administered in Deltoid Left on 29Jun2021 14:45 as dose 1, single for COVID-19 immunisation (Age at vaccination 40 years). Medical history included narcolepsy from 2017 and ongoing, adrenal insufficiency from an unknown date and unknown if ongoing, HPA access damage; Cortisol average is 2, ongoing asthma, born with it, migraine from 2017 and ongoing, treated with Botox, velopharyngeal incompetence from an unknown date and unknown if ongoing, dysphagia, so she chokes frequently when she tries to eat and drink, ongoing blindness, partially blind, no left vision in either eye. Wears glasses, ongoing vertigo, when she tips her head back/ posterior, ongoing intervertebral disc protrusion, 8 discs in her back, hypersensitivity (She has a lot of allergies to preservatives), COVID-19 from Oct2020 to an unknown date, she already had COVID in Oct2020 and didn't do well with it; had to have multiple steroid treatments to recover; she was very very ill. In 2017 she was in bad car accident that caused a brainstem injury and resulted in most of her current medical conditions. States that the fainting could be an interaction with one of her medications. State this may be putting more stress on her heart which may not have been fully recovered from her experience with COVID. 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 none. No vaccines administered on same date with the Pfizer vaccine considered as suspect. Prior Vaccinations (within 4 weeks) None. Family Medical History Father died from heart attack at 65 years old. Concomitant medication(s) included hydrocortisone (HYDROCORTISONE) taken for adrenal insufficiency; lisdexamfetamine mesilate (VYVANSE) taken for narcolepsy, salbutamol (VENTOLIN [SALBUTAMOL]) taken for asthma; fluticasone furoate, vilanterol trifenatate (BREO ELLIPTA) taken for asthma; gabapentin (GABAPENTIN) taken for intervertebral disc protrusion; topiramate (TOPAMAX) taken for migraine; oxycodone hydrochloride, paracetamol (PERCOCET [OXYCODONE HYDROCHLORIDE;PARACETAMOL]) taken for pain; hyoscyamine (HYOSCYAMINE) taken for an unspecified indication; meclozine hydrochloride (MECLIZINE HCL) taken for dizziness, vertigo; ondansetron (ZOFRAN [ONDANSETRON]) taken for nausea. On an unspecified date in 2021 patient experienced, felt like she had a mild case of covid, sore arm, fever, headache, tachycardia, bradycardia, extreme fatigue, on 29Jun2021 dizzy/lightheaded, on an unspecified date almost fainted/it may have been a vasovagal reaction. Sore arm, Fever, felt like she had a mild case of Covid for about 5 days, very dizzy and lightheaded, and almost fainted was Related. She got her 1st dose of the Pfizer Covid Vaccine on 29Jun2021. Because of all her allergies, she did have more severe traditional side effects like a sore arm, fever, and headache; felt like she had a mild case of Covid for about 5 days. The day she got her shot, within 15 minutes, she was very dizzy and lightheaded, and almost fainted. States that feeling went away, and she just thought it may have been a vasovagal reaction. It didn't happen again after that, so she just king of ignored it. States it may also be important to note that she has a previous brain injury from a bad accident, and she has to take hydrocortisone tablets 5mg daily because she is not able to make cortisol, so this could also play into what is going on with her currently. States that she did contact her physician, but they haven't contacted her back. She would like to see a Cardiologist, but she needs a referral. 1st dose at pharmacy at 2:45pm in her anterior left deltoid. States the nurse did it like a quick jab and it may have missed her deltoid, which may be why she was so sore. She was still sore for quite a while. States she has tremendous allergies to sulfites, sulfa, thimerosal, basically all preservatives; she has an EpiPen in case she needs it. States she can't take nitrates. No further details provided. Yes, she believes all her symptoms are directly related to the Covid vaccine. States she does feel like she is improving; she's not falling on the ground fainting every day. States she has fainted about 6-7 times already; her dog took a hit for her; she fell on the dog instead of hitting the fireplace. States that it happens so fast, she tried to stop it, but there's just not always anything she can do. Sometimes she tries to cough to see if that will help, like forcing a vasovagal reaction. States that she has bruises all over her body from the fainting. No Emergency Room/ Physician visit. Office Caller states that her symptoms are cardiac related, she was having tachycardia, bradycardia, and she knows the symptoms, and has extreme fatigue. She still feels the shots were worthwhile. States she is sure she just needs to rest, especially if it was myocarditis because there really isn't a treatment for it. The outcome for events dizziness, presyncope recovered on an unspecified date in 2021 and rest of the events was unknown.; Sender's Comments: Based on the information in the case report and a plausible temporal relationship, a possible causal relationship between the events drug ineffective, suspected COVID-19 and suspect drug BNT162B2 cannot be excluded.