'Prison Break' star Wentworth Miller reveals autism diagnosis

Not a 5-year-old, he wrote.The actor, who has been out since 2013, has been vocal about his struggles with mental health and how he tried to kill himself as a teenager.

Wentworth Miller, best known for starring in the serial drama ''Prison Break'', has revealed that he has autism.

The 49-year-old actor opened up about his condition on Instagram Tuesday, said he received a formal diagnosis of autism a year ago, admitting that the news was ''a shock but not a surprise''.

''This isn't something I'd change,'' he added. ''No. I get – got – immediately being autistic is central to who I am. To everything I've achieved/articulated... I also want to say to the many (many) people who consciously or unconsciously gave me that extra bit of grace + space over the years, allowed me to move thru the world in a way that made sense to me whether or not it made sense to them... thank you (sic),'' Miller wrote alongside a blank white square.

Autism, or autism spectrum disorder (ASD), refers to a broad range of conditions characterised by challenges with social skills, repetitive behaviors, speech and nonverbal communication The actor, a graduate from Princeton University, said that he will now be ''re-examining 5 decades of lived experience thru a new lens (sic)'' Miller also criticised the diagnostic process for adults, calling it ''a long, flawed process in need of updating''. ''I'm a middle-aged man. Not a 5-year-old,'' he wrote.

The actor, who has been out since 2013, has been vocal about his struggles with mental health and how he tried to kill himself as a teenager.