Average age of death is in the 3rd decade of life, however, affected persons may live into the 7th decade of life. Death occurs in 50% of the affected individuals by age 30. The outlook for patients with<unk>  depends on the particular diagnostic category. Patients with chronic, progressive, generalized<unk>  in the setting of central nervous system degeneration have a generally poor long-term prognosis. Death can occur from pneumonia, acute respiratory failure, or sudden cardiopulmonary arrest in such patients. The survival rate and quality of life have increased since the mid-1980s mostly due to a greater understanding of the most dangerous symptoms. At present,<unk>  patients can be expected to function independently if treatment is begun early and if major disabilities are avoided.
Familial dysautonomia
Bartter syndrome
Arts syndrome
Blind loop syndrome
Andersen–Tawil syndrome
Crandall syndrome
Barakat syndrome
Eagle syndrome