That could be considered normal.
If your child happens, you have no grounds for concern. But we must remember that even normal blood pressure may fluctuate. Everything is individual. In children the upper limit can reach as many 70-90. But variations are not excluded when it is in the range 100-140.
And for the younger children are sometimes hesitant to trend downward.
As for babies, the risk of hypertension in these increases, if the mother smokes during pregnancy
In children, hypertension can be primary, without cause. A secondary may be associated with pathologies.
In primary hypertension can easily cope with the disease. Much depends on the parents. They must control the reactions to the child in physical activity and emotional arousal. Some children tolerate these normal factors, but other increases blood pressure. A similar condition is associated with heredity. Children whose parents suffer from hypertension are at higher risk.
As secondary hypertension most often cause chronic kidney disease and congenital defects in the development of the aorta.
High blood pressure can be caused by intake of certain drugs. For example, an overdose of vasopressors nose drops and other anti-fever medications. Because not only narrow blood vessels in the nasal mucosa, but also the arteries. And that leads to high blood pressure.
Hypertension is commonly seen in overweight children and a tendency to obesity. When they grow, they inevitably become hypertensive. But this is no reason to despair. Knowing the characteristics of blood pressure, your child must correctly build the daily regimen.
Stress and too much pressure when studying can also lead to high blood pressure. And so long sitting in one place without any physical activity. And as it depends on the parents, it is correctable.
In this respect, it all depends on age. For example, for babies the best prevention is breastfeeding. This is especially important for premature infants. To not develop hypertension in the future, you should breastfeed as soon as a long time.
For older children, prevention lies in the exercise. In this regard, note that the language schools and elite children with hypertension than in mainstream schools.
Do not allow children to stay a long time before TV and computer. Try to earn more frequent fresh air to move, to play with other children outside. It is particularly important that children with bad heredity. Blood pressure in children after 3 years should be measured. For most babies this is necessary if they are premature, if low birth weight, if complications occurred in course of pregnancy and childbirth. And also if there are congenital heart disease and kidney problems.