Some people use the term “type 3 diabetes” to describe Alzheimer’s disease. However, official health organizations do not accept this term, and most doctors do not use it for diagnostic purposes.

Gaucher disease is a rare genetic disorder in which your body doesn’t make enough of an enzyme that breaks down fats. The symptoms begin earlier and are more severe than in type 1 but begin later and ...

Chiari malformation is when a part of the brain extends through an opening where the skull meets the spinal canal. It can happen if the skull is too small or misshapen. Depending on the severity, it ...