A 11-year-old boy presents for evaluation of headaches and d…

A 11-yeаr-оld bоy presents fоr evаluаtion of headaches and difficulty concentrating at school. He is overweight with a BMI in the 92nd percentile. His blood pressure readings over the last three clinic visits where: Visit 1: 128/82 Visit 2: 130/84  Visit 3: 132/86 *Reference: 90th percentile for an 11 year old boy at 50th percentile in height is 117/76 95th percentile for an 11 year old boy at 50th percentile in height is 121/80 His height is at the 50th percentile for age. He has no known medical history. Physical exam is normal except acanthosis nigricans. UA is normal. What is the most accurate diagnosis?