The first group is called a dendritic cell disorder, and the most common disease in this group is Langerhans Cell Histiocytosis (LCH) previously known as Histiocytosis X. Also included in this group are more rare diseases, juvenile xanthogranuloma (JXG) and Erdheim-Chester Disease (ECD).
Franklin D. Roosevelt Franklin D Roosevelt was born January 30th 1882. He got married at the age of  23 to his cousin Eleanor Roosevelt. Sixteen years later he was diagnosed with polio, and became paralyzed from the waste down.
In September 1918, Eleanor found letters revealing the affair in Roosevelt's luggage, when he returned from World War I. Franklin had contemplated divorcing Eleanor, but Lucy would not agree to marry a divorced man with five children. Franklin and Eleanor remained married, and FDR promised never to see Lucy again.