Growth hormone deficiency is effectively treated with growth hormone. The average growth in the first year of treatment is 12 cm. If treatment is early and continues for a long time, normal height can be achieved in adulthood. In children younger than fetal age who remain short after 2 years of age, 80% of them will be short in adulthood. These children younger than gestational age can be treated with growth hormone. Early treatment may allow the child to reach normal adult height. Children with congenital ovarian hypoplasia are also candidates for growth hormone therapy. Adult height can increase by 10 to 16 cm after treatment. Children with idiopathic dwarfism also have positive results with growth hormone treatment. Idiopathic dwarfism includes familial dwarfism, delayed pubertal growth, and children with dwarfism caused by hourly nutritional diseases, whose growth hormone levels are normal, and most of them are effective if treated with larger doses of growth hormone. However, treatment must be early. If by pubertal development, the bone age is close to closing, the treatment will be ineffective. Therefore, children with dwarfism should seek diagnosis and treatment from a doctor as early as possible in order not to lose the time for treatment and to have hope of growing taller.