Billy Joel has announced the cancellation of all his upcoming concerts following a diagnosis of normal pressure hydrocephalus, a neurological condition characterized by cerebrospinal fluid buildup in the brain. The iconic musician expressed his sincere apologies to fans, stating that he is undergoing physical therapy for this medical issue. This decision affects numerous scheduled performances, including shows in major venues like NYC and Cincinnati. Experts shed light on the condition, which can be reversible and may present symptoms resembling dementia. Tributes and support have poured in from fans and colleagues in response to the announcement.