Neonatal diseases are existing before birth or at the time of birth or even develop during the first month of the infant. Neonatal or pediatric psychiatry is a branch of psychiatry that focuses on the diagnosis, prevention, and treatment of mental disorders in children. Pediatric endocrinology is a subspecialty which deals with endocrine disorder such as diabetes, variations of physical growth and sexual development in infants. Pediatric dermatologist treat the neonates with skin disorders. Pediatric geneticists deals with diagnose, screen, and treat families with of birth defects problems.