Early diagnosis and therapy help, that these damages are to avoid. (Silke Meyer, W., arterial hypertension in the child’s adolescence. download/hypertonie.pdf, (2009)) Classification according to percentiles of the blood pressure in children rises with age and body size. This makes it difficult, a clear boundary to consider how this is done in adults between normal and elevated values. Definition begins the childish hypertension from the 95th percentile in body size, age, and gender are included (Lurbe, E., ET.) AL., management of high blood pressure in children and adolescents: recommendations of the European society of hypertension. J.