After a stroke left Howard Blatt unable to speak, he helped create a support group for other people with aphasia, a brain condition that impairs communication. He recently died at age 88.

News of the former TV host's medical diagnosis comes days ahead of the TV premiere of Where is Wendy Williams? — a two-part documentary detailing her health battles.

Willis family announced Thursday that his previous diagnosis of aphasia has progressed to frontotemporal dementia. The disease can cause issues with speaking and writing.

While details of Willis' diagnosis are unknown, medical experts stress the importance of the brain condition and how it's specifically treated — depending on its severity.