What can be causing my headache?it's like head is pressurized.i've had high blood pressure & can feel sth rushing through when i touch a point on head

These are unusual: symptoms and could be related to any of a number of different problems. The fact that you have high blood pressure at age 16 is already a significant problem and warning sign You need to be evaluated by a health care provider as soon as possible. Make an appointment today.

High BP: High BP associated with headaches translates, at your age that something else is going on. Also, It might be an association with a migraine. Anyway a doctor's intervention is necessary. CT to R/O intracranial bleeding due to a congenital aneurysm would be indicated. The most benign would be some hormonal changes (testosterone inflow?) but this is only if you exclude the others