It's likely more common than you'd think, as Bruce Willis has been diagnosed with a cognitive disorder that affects his ability to speak and work.

The actor's daughter, Rumer, wrote that her father has been diagnosed with a neurological condition that makes it hard to remember words.

According to his daughter's post, the 67-year-old actor is stepping away from his career that has meant so much to him.

Aphasia is a condition that robs you of the ability to communicate, and can affect one's ability to speak, write and understand language.

According to the National Institutes of Health, people most often develop aphasia suddenly after a stroke or head injury, though neither has been reported in this case.

Although most aphasia sufferers are middleaged, it is a common disorder that can affect anyone. According to the National Aphasia Association, there are at least two million people in the US with aphasia, and 180,000 are diagnosed with it every year.

While cognitive exercises are the most often prescribed treatments for aphasia patients, which can include everything from joining book clubs to speech therapy, advances in non-invasive brain stimulation (NIBS) technology are carving new avenues of research and experimental treatment for people who develop aphasia.

With any luck, they will be able to help people who suffer from this disorder that affects one of America's most beloved actors.

As Bruce always says, "Live it up", and together we plan to do that.

New research seeks to improve aphasia recovery.

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