Pediatricians are the doctors who manage the health of y children, including their physical, mental and behavioral health problems. They are trained in diagnosing and treating diseases in children, from minor to serious illnesses. Pediatric specialists treat children from birth until they turn 18 or the age of 21 years in some countries, as adolescent medicine is considered a subspecialty of pediatrics. The pediatrician is considered the general practitioner for children, as he detects and treats complex cases. He can refer them for more specialized health care, but he will maintain the complete picture of the child’s health to help provide comprehensive medical care.