Charlie Sheen through the years

Actor Charlie Sheen appears on Nov. 17, 2015, during an interview on NBC's "Today" show in Manhattan, saying he tested positive four years ago for the virus that causes AIDS.

Television show host Mehmet Oz talks with actor Charlie Sheen, right, for a show that aired Jan. 12, 2016. Oz is the host of "Dr. Oz."

Actor Charlie Sheen arrives for the "Scary Movie 5" premiere on April 11, 2013, in Hollywood.

Charlie Sheen with his "Two and a Half Men" co-stars Jon Cryer and Angus T. Jones circa the CBS sitcom's debut on Sept. 22, 2003.

Actor Charlie Sheen is mobbed for autographs and photos as he makes his way through Times Square on Jan. 14, 2013.

Charlie Sheen with host Katie Couric during an appearance on "Katie" in Manhattan, which aired Feb. 5, 2013.

Charlie Sheen speaks onstage at the "Anger Management" panel during the FX portion of the 2012 Summer TCA Tour in Beverly Hills on July 28, 2012.

Charlie Sheen, Selma Blair and Shawnee Smith speak at the "Anger Management" panel during the FX portion of the 2012 Summer TCA Tour in Beverly Hills on July 28, 2012.

Charlie Sheen, James Black and Darius McCrary in the series premiere of "Anger Management."

Charlie Sheen onstage at the MTV Movie Awards in Los Angeles on June 3, 2012.

Charlie Sheen presents the award for Outstanding Lead Actor in a Comedy Series at the 63rd Primetime Emmy Awards on Sept. 18, 2011.

Actor Charlie Sheen appears on NBC's "Today" show on Sept. 16, 2011.

Matt Lauer interviews Charlie Sheen on NBC's "Today" show on Sept. 16, 2011.

Michael Douglas as Gordon Gekko and Charlie Sheen as Bud Fox in 1987's "Wall Street" directed by Oliver Stone.

Charlie Sheen out in Los Angeles on Jan. 28, 2009.

Charlie Sheen enters Pitkin County Courthouse to attend a hearing on domestic violence charges in Aspen on March 15, 2010.

Actor Charlie Sheen attends his court appearance to face domestic abuse charges in Aspen on March 15, 2010.