Growth Hormone Deficiency
The lack of growth hormones prevents proper development.
Symptoms
Growth Hormone Deficiency is characterized by slow or late development, reduced energy levels, and impaired cardiac function. The Pituitary Gland secretes the growth hormone, and when there isn't enough of this hormone the body can't grow correctly. Most parts of the body are affected, including the bones, fat, and muscles.
Pituitary Gland
http://www.endocrineweb.com/conditions/growth-disorders/growth-hormone-therapy
The growth hormone is secreted by the Pituitary Gland located in the brain.
Heights
http://www.medgadget.com/2015/10/global-growth-hormone-deficiency-market-2015-industry-size-trends-growth-share-trail-review-research-and-analysis.html
The final height is severely decreased due to Growth Hormone Deficiency.
Growth Chart
http://bestpractice.bmj.com/best-practice/verify-user-north-american-access.html
Compared to the average growth chart, those affected with Growth Hormone Deficiency have a very slow or almost flat growth pattern.
Quote
When growth hormone deficiency is present, growth hormone replacement therapy has widespread health benefits on quality of life, body composition... and exercise capacity.
Treatment
Since there is a chemical imbalance the body can't fight the disease, however with daily shots of growth hormones the person can grow to an almost average height.