Explainer: What is aphasia, the condition that has forced Bruce Willis to quit acting?

The condition affects the language part of a person’s brain and can impact a person's ability to speak, comprehend others, read and write

Bruce Willis was recently diagnosed with aphasia.

Bruce Willis is to step away from his acting career after being diagnosed with aphasia.

The 67-year-old actor, who was prolific in the action movie genre and is best known for his role in the hit Die Hard series, was recently diagnosed with the condition which has impacted his cognitive abilities, his family shared.