[Hypertensive crisis in adolescence...what is it?].

Blood pressure in the pediatric age group is percentilated, depending on age, gender and height. Hypertension exists if either systolic or diastolic averages are greater than 95th percentile for age, gender and height. The prevalence of hypertension in the pediatric age group is about one to three percent, many of these patients are mildly affected. The most common cause of hypertension in prepubertal child is renal. By adolescence, the hypertension is primary or essential in majority of cases. We present a case of hypertension in an adolescent of secondary cause.