What is aphasia? Bruce Willis is ‘stepping away’ from acting after diagnosis

Willis’ family said he was recently

Diagnosed with aphasia, which is impacting his cognitive abilities

Bruce Willis’ decision to end his acting career of more than four decades

after a recent aphasia diagnosis has put a spotlight on the somewhat rare disorder.

Aphasia describes a neurological condition that affects a person’s ability to communicate verbally or through writing.

It affects an estimated 2 million people in the U.S., and nearly 180,000 acquire it every year,

according to the National Aphasia Association.

Willis’ daughter Rumer Willis posted Wednesday on Instagram that the condition has affected her father’s “cognitive abilities