My son (a very fit athlete.  He is 6 feet tall, about 162 pounds and has a 29 inch waist- a healthly kid with a 21-22 BMI) developed high blood pressure and bad headaches/migraines pretty suddenly in April, which we saw for the first time within a couple of weeks of  his first COVID vaccine.  He is 17.  He had a physical the month prior to this and had no issues (His blood pressure was 120/76 on 3/11/21).  We have 2 older daughters who were vaccinated with no adverse reactions except the usual post vaccine fatigue.   My son?s school was concerned about  his blood pressure starting on April 27and made him do an EKG to be safe and it was normal, so we chalked it up to school stress and forgot about it.  Throughout the summer, his headaches got worse and more frequent.  We hadn't given his blood pressure another thought since school was out.  He then got a COVID breakthrough infection mid July (but this was all happening and worsening before that).  His case was very mild and no one else in our household got the infection (4 of us) from him.  Before school started, I took him to his pediatrician to discuss the headaches, which went from 2 days a week to 3-4 days a week some weeks.  To my surprise, his blood pressure was still high (160/90).  He also had sugar in his urine and his glucose was 136 (he hadn?t eaten in hours, but it was not a true fasting test).  We repeated that test days later and no glucose in urine and his fasting glucose was 100).  We repeated a third time (fasting) and no sugar in urine and glucose was 93.  We were sent to a cardiologist for the blood pressure.  She first did a blood pressure study to confirm that the blood pressure was in fact high and not due to white coat syndrome. So ordered an echocardiogram and a renal ultrasound.  Both were normal (as were kidney lab values).    Meanwhile, his headaches continue to worsen and are migraine level about 5-6 days a week now and he can?t sleep and it?s interfering with school and sports.  I have had to work with his school on several occasions because he would get 3-4 hours of sleep for 4 days in a row and could barely function.  We saw a neurologist and she did a brain MRI and it was normal.  The only finding was ?subcentimeter reactive cervical Lymph nodes?, which they said could be due to something as minor as a cold.  We have a consult with an endocrinologist later this month.  And may schedule one with a rheumatologist.  The neurologist just ordered an MRI of the blood vessels.  We may start him on beta blockers to try to lower the blood pressure which has now consistently been 155/100 or more every day with or without the migraine.  I should mention he had no history of headaches or migraines or high blood pressure prior to late April.  As I mentioned earlier in the note, almost exactly a month before the first vaccine, his blood pressure was 120/76.    The cardiologist said sometimes this happens with no explanation.  But, as I said, he is a super fit, active, healthy 17 year old boy.  And I can?t believe this ?just happens?, especially so suddenly.  When we tried to unravel this, we realized it started soon after the first Pfizer vaccine.  I can?t find any information on this and no one can figure out what is going on.  We have now consulted with 4 doctors (three are specialists), in addition to the emergency room once where we saw 2 ER doctors plus a neurologist.  And we don?t have any hint of an answer.  We live outside of the state and most of the specialists have been out of Hospital.  We don?t even know if the blood pressure and migraines are related.  And we don?t know if the vaccine is related.  But it is certainly a strong coincidence at the least.    My son (who is at boarding school) was sending me blood pressure readings last night of 155/104.  We are getting very very worried.  We don't have any idea where to turn for answers at this point. We are hesitant to only treat/mask symptoms without finding the cause of this, as it was so sudden.  The neurologist won't give him abortive migraine medicine because they tend to raise blood pressure and, since we haven't seen a nephrologist, she is hesitant. Any direction or info you can give me would be very much appreciated. We are a very much pro-vaccine family,  but we can?t ignore this coincidence and are worried that it could have triggered an underlying condition that we can?t find.