Thank you for your query.
I need to clarify two things before we can try to find an answer to your query. Growing in a child is a constant process and secondly what are the blood pressure readings when your son is lying down and when he is standing.
can be due to a number of reasons for which a detailed clinical history and examination is required. You should discuss the issue with the treating doctor who may like your son to be reviewed by:
1. ENT doctor
before a final cause can be found out.
I hope I have answered your query to your satisfaction.
Wishing your son all the best.
Rajiv K Khandelwal