Bruce Willis is said to have recently been diagnosed with the condition aphasia, with his family having revealed that as a result he will be stepping away from his career.
This was announced on social media yesterday, with them stating that it had been a "really challenging time" amid his health issues which have impacted his cognitive abilities.
The actor, 67 - who is best known for playing John McClane in the Die Hard franchise - will have brought recognition to the condition, which fans might not have heard of before.