Media mogul Ted Turner told CBS in an interview that he has Lewy Body Dementia. LBD is one of the three most common forms of dementia affecting 1.5 million Americans, including the late Robin Williams, but it is often misdiagnosed.

CNN founder Ted Turner has revealed that he is suffering from Lewy body dementia, the same form of dementia that Robin Williams battled in the last few years of his life.

According to the website for the Lewy Body Dementia Association, LBD affects 1.5 million Americans. It is a progressive neurological disorder that affects a patient’s memory, cognition (especially decision making), mood, behavior and balance and is often misdiagnosed as Parkinson’s, as Williams’ case was, or bipolar disorder, as Turner’s was.

In an interview with Ted Koppel set to air on “CBS Sunday Morning” this weekend (9 a.m. EDT/PDT), Turner, 79, likened his case to a “mild case of Alzheimer’s … but not nearly as bad … Thank goodness, I don’t have that.”

Displaying some of the memory problems characterized by LBD, he struggled to remember the name of his disorder,  “I also have got, let’s – the one that’s – I can’t remember the name of it … dementia.”

Turner said it leaves him “tired” and “exhausted,” adding that the other symptom that bothers him most is “forgetfulness.”