Riley Day Syndrome, also known as familial dysautonomia, is a rare genetic disorder that affects the autonomic nervous system. This condition primarily affects individuals of Ashkenazi Jewish descent. While it may be called Riley Day Syndrome, it is important to note that this disorder is commonly referred to by its official medical term, familial dysautonomia. There are no known synonyms or alternative names for Riley Day Syndrome. However, understanding that familial dysautonomia and Riley Day Syndrome are the same condition helps in promoting awareness, research, and support for those affected by this complex disorder.