Céline Dion's Sister Provides Ongoing Health Update Amid Singer's Battle With Rare Disorder

Céline Dion was diagnosed with stiff-person syndrome, a rare neurological disorder, in December 2022.
The singer was forced to cancel her world tour to focus on treatment and recovery.
Her sister says no effective medicine has yet been found to treat Celine's condition.
The family remains supportive and hopeful during Celine's health struggles.
It is unclear when or if Celine will be able to return to touring and performing.