A family in the US discovered that four of their six kids were diagnosed with Chiari malformation, a rare brain disorder.

In a rare medical occurrence, four American sisters have all been diagnosed with Chiari malformation. In this brain disorder, ...

A skull abnormality that squeezes the lower brain, often causing headaches and other neurological problems, might be part of our genetic inheritance from Neanderthals. People with Chiari malformations ...