syndrome

He’s an extreme case of a phenomenon that has an official name: post-founder syndrome.

Clinicians can now document the syndrome with a single, specific billing code instead of relying on multiple, less precise ones.

Since being diagnosed with Hunter syndrome in April, Oliver's life - like that of his elder brother, Skyler, who also has the condition - has been dominated by hospital visits.

Marouf has multiple life-threatening medical conditions, including Brugada syndrome, a serious heart condition marked by irregular rhythm that stress can worsen.

The finding, the authors said, is consistent with the "domestication syndrome phenotype".