Hello and thank you for using HCM.I carefully read your question and I understand your concern. You should not worry. I ll try to explain you something and give you my opinion. You should know that we talk about hypertension if we have mean value that exceeds 140 / 90 mmHg.A person might have high value during emotional and physical strees so its mandatory to judge on mean values. Usaly in young ages we deal with secondary hypertension meaning that it s a secondary couse of it.This might be a renal disease, an endocrine problem or a cardiovascular anomaly. High blood pressure values might give headache, blurred vision, ear noises, retinal hemorrhage ect. So, if I was the treating doctor I will recommend some examination like a cardiac echo to evaluate heart function and structure, a full blood analyze, your urinary chatecolamins and a holter pressure monitoring to evaluate the values during day and night. After all this we can better judge if we have hypertension and how to treat it. Hope I was helpfull. Wish your son good health Best regards, Dr.Ervina.