Progeria syndrome is an extremely rare genetic disorder of unknown origin that manifests as premature aging in children. Progeria affects many parts of the body including the skin, bones, and arteries.Most patients appear normal at birth. Signs and symptoms usually begin to develop within the first one to two years of life. Changes in skin and failure to gain weight are usually noticeable first.There is presently no treatment for progeria

Color Blindness

Color blindness is the inability to see certain colors in the usual waySymptoms vary from person to person, but may include:Trouble seeing colors and the brightness of colors in the usual way. Inability to tell the difference between shades of the same or similar colors .Often, the symptoms may be so mild that some persons do not know they are color blind. A parent may notice signs of color blindness when a child is learning colors.Rapid, side-to-side eye movements and other symptoms may occur in severe cases.There is no known treatment.

Huntington's disease

Huntington's disease is a disorder passed down through families in which certain nerve cells in the brain waste away. There are two forms of Huntington's disease. The most common is adult-onset Huntington's disease. Persons with this form usually develop symptoms in their mid 30s and 40s.
An early-onset form of Huntington's disease accounts for a small number of cases and begins in childhood or adolescence. Symptoms may resemble those of Parkinson's disease with rigidity, slow movements, and tremor.