On David Letterman, Colin Farrell opened up about his son’s condition: Angelman’s Syndrome.
While this video doesn’t talk a lot about the specifics, Angelman’s Syndrome is a condition that effects about one out of every two thousand people.
“Children with Angelman Syndrome typically have a happy, excitable demeanor with frequent smiling, laughter, and hand-flapping movements. Hyperactivity and a short attention span are common.
Most affected children also have difficulty sleeping and need less sleep than usual. Some affected individuals have unusually fair skin and light-colored hair,” according to Genetics home reference.
Kudos to Farrell for being willing to talk about this condition.