passing out; fatigue; Migraine; postural orthostatic tachycardia syndrome/symptoms of headache, tachycardia, dizziness and felt horrible; Breast enlargement; chills; Lymphnode swelling in armpit; This is a spontaneous report from a contactable consumer (mother). A 17-year-old female patient received bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE), via an unspecified route of administration on 16May2021 12:00 at 17-year-old (Batch/Lot number EW0186) as DOSE 2, SINGLE for covid-19 immunisation. Medical history included ongoing Cholinergic urticaria. The patient's concomitant medications were not reported. The patient previously took first dose of bnt162b2, on right arm on 18Apr2021 09:00 at 17-year-old for covid-19 immunisation and experienced overtired (18Apr2021 to 20Apr2021). 2 months after they reported to as 2 in half weeks after getting the vaccine got symptoms of headache, tachycardia, dizziness and felt horrible. She was diagnosed with POTS(postural orthostatic tachycardia syndrome). Her symptoms have been debilitating at times. Asking if Pfizer has any reports on this in younger people after getting the vaccine. Stated that no medication is working very well as they are trying to treat these symptoms. Asking if symptoms will worsen if she gets covid because she responded this way to the vaccine. Also information on booster shot for people with POTS. Asking where she could see more information about clinical trial. Stated that non information has Pfizer has provided from the life changing event that her daughter is experiencing is appalling. Caller states she is calling about the Pfizer vaccine, reclarified as the Pfizer Covid vaccine. Caller states she is calling about her daughter, who got the second dose of vaccine. Caller states 4 weeks, her daughter woke up on 11Jun2021 with a severe headache, and ended up in the emergency room. Caller states she also was passing out and felt like a light switch went off. Caller states her daughter has no prior medical history. Caller states her daughter has seen a series of doctors and she, herself, is feeling desperate. Caller states she was later diagnosed with POTS(postural orthostatic tachycardia syndrome). Caller states her daughter also had dizziness and tachycardia. Caller states her daughter is now followed by a cardiologist and a neurologist. Caller states she was calling various institutions, and at the PRIVACY, she cannot get an appointment for 14 months, because she was told they are inundated with post vaccine injury cases and post Covid cases of POTS. Caller states her daughter is a national level swimmer, and she got her daughter in to see a doctor, who assumed she had a Migraine, and started her on medication, which had no effect. Specifics identified later in report. Caller states her daughter had dizziness, and the room was spinning, and she had an MRI (Magnetic resonance imaging), which was normal. Caller states her daughter was referred to a neurologist. Caller states her daughter was diagnosed with POTS by a neurologist at PRIVACY on 21Jul2021. Caller states her daughter did see a cardiologist, who did various tests, and she was ruled out for myocarditis, and all the tests came back normal. Caller states her daughter still has tachycardia, and she is constantly dizzy and her heart rate will go from 50 to 100 without warning and she feels like she is going to pass out. Caller states her daughter feels horrible and can't really function. Caller states that her husband is in the medical field and she does understand that reactions and POTS can occur. Caller states she is looking for any studies that can provide information. Caller states she is looking for information, to find out how she can understand any data on POTS and the vaccines, what the findings are, or if she can be directed to any studies that are being done. Caller states her daughter's life has changed overnight. Caller states she is just trying to get information. Caller states her daughter was on medications to treat some of the symptoms but they did not work. Caller states another reason for reaching out today to Pfizer, is she understands the recent FDA decision to provide boosters to certain population. Caller states no one truly knows the data well enough to know how the vaccines, affect children. Caller states that before they put another vaccine into her daughter's arm, her daughter has gotten a medical exemption, because of the way she responded to the Covid vaccine. Caller asks now, because of her reactions, will her daughter have worsened symptoms if she contracts Covid? Caller states that her daughter did not have any issues prior to the vaccination. Caller clarifies from earlier in call that the doctors tried her daughter on a two medication trial for her headache. First medication: Caller states it was a migraine medication that did not work. Caller states the medication should have worked quickly if her daughter truly had a migraine. Caller states she does not know the name of the medication. Caller states the doctor determined quickly that her daughter did not have a traditional migraine. Second medication: Gabapentin, titrating dose: 100mg for 3 days, 200mg for 3 days, 300mg for 3 days. Caller states this medication did not work. Caller states her daughter had a reaction and it actually made her headaches worse. Caller states her daughter felt more dizzy. Caller states she just went through all the medications that they are not using and disposed of any medications not used. Caller states later that after the second vaccine, her daughter had chills, lymph node swelling in caller thinks left armpit, and she thinks, left breast enlargement (probably in the morning). Caller states it was on the same side as vaccine, but cannot remember if it was on the left or right side. The caller understood the risks and common side effects. The development of POTS triggers in her system. She said when it is in the percentage it's lifechanging. She developed tachycardia; debilitating dizziness; headaches that are excruciating. She even had an MRI (Magnetic resonance imaging) done and she didn't have a brain tumor. There are severe symptoms. She said they are a drug company they are collecting data all the time. They are compiling information; someone she spoke with before said they are seeing clusters of symptoms but they are not calling it POTS. She has tachycardia, fatigue and headaches. They are not getting diagnosed. She know they have this. She wanted to know the ideology of this going forward. She wanted to know if her daughter gets a booster; both cardiologist and neurologist said not to. They are looking for medications. She's on 2 cardiac meds that are not helping. What are they seeing in POTS diagnosis; if there is a study for her. They are being followed by people are taking the information. She didn't know if it's going to be compiled. It's frustrating. The drug company  have got studies and investigators. They are acting like nothing is going on. Other have a POTS clinic and it's inundated with post covid POTS and vaccine related POTS.  It's incredibly frustrating. Where can she be followed? She was  frantically looking for help. Agency as been more helpful. They gave her specific information on places that are studying this and who to contact.  The CDC does nothing: they say report an adverse event and look for studies. The website: pfizer vaccine/research: that website doesn't give you contact person. She and her husband are not antivaxxers. They are grateful for the company, but there has to be moral responsibility. It's not being talked about. When it's presented you are sent through these dead end holes. If it was the precedents child experiencing this they would be doing everything to help. She wanted useful information. She knew that's not their fault. Caller was upset there wasn't more information Pfizer MI could present. She was upset that they are collecting this information but it isn't available and it's not being talked about. The patient experienced passing out (hospitalization) on an unspecified date with outcome of unknown, postural orthostatic tachycardia syndrome/symptoms of headache, tachycardia, dizziness and felt horrible on 11Jun2021 with outcome of not recovered, chills on 16May2021 20:00 with outcome of recovered on 17May2021, breast enlargement on 17May2021 with outcome of recovering, lymphnode swelling in armpit on 16May2021 with outcome of recovered, fatigue on an unspecified date with outcome of unknown, migraine on an unspecified date with outcome of unknown.  No follow-up attempts are needed. No further information is expected.