Question: What disorder did Rupert Hughes' nephew have?

Context paragraphs:
Souls for Sale: Souls for Sale is a 1923 American silent comedy-drama romance film written, directed, and produced by Rupert Hughes.  Based on the novel of the same name also by Rupert Hughes, the film stars Eleanor Boardman in her first leading role, having won a contract with Goldwyn Pictures through their highly publicized "New Faces of 1921" contest just two years prior.

Rupert Hughes: Rupert Hughes (January 31, 1872 – September 9, 1956) was an American novelist, film director, Oscar-nominated screenwriter, military officer, and music composer.  He was the brother of Howard R. Hughes, Sr. and uncle of billionaire Howard R. Hughes, Jr. His three-volume scholarly biography of George Washington broke new ground in demythologizing Washington and was well received by historians.  A staunch anti-Communist, in the 1940s he served as president of the American Writers Association, a group of anti-Communist writers.

It Had to Happen: It Had to Happen is a 1936 film starring George Raft and Rosalind Russell.  The movie was written by Kathryn Scola, and Howard Ellis Smith, and directed by Roy Del Ruth.  It is based on the 1909 short story "Canavan, the Man Who Had His Way" by Rupert Hughes.

Tess of the Storm Country (1960 film): Tess of the Storm Country is a 1960 American drama film directed by Paul Guilfoyle and written by Charles Lang.  The film stars Diane Baker, Jack Ging, Lee Philips, Archie Duncan, Nancy Valentine and Bert Remsen.  It is based on the novel with the same title by Grace Miller White and its adaptation for the stage by Rupert Hughes.  The film was released on December 8, 1960, by 20th Century Fox.

Patterson Dial: Patterson Dial (May 19, 1902 – March 23, 1945) was a writer and silent film actress of the 1920s.  Later she married novelist Rupert Hughes.  She was born Elizabeth Patterson Dial in Madison, Florida.

Howard Hughes: Howard Robard Hughes Jr. (December 24, 1905 – April 5, 1976) was an American businessman, investor, pilot, film director, and philanthropist, known during his lifetime as one of the most financially successful individuals in the world.  He first made a name for himself as a film producer, and then became an influential figure in the aviation industry.  Later in life, he became known for his eccentric behavior and reclusive lifestyle—oddities that were caused in part by a worsening obsessive–compulsive disorder (OCD) and chronic pain from a plane crash.

Tess of the Storm Country (1932 film): Tess of the Storm Country is a 1932 American pre-Code drama film.  The movie stars Janet Gaynor, Charles Farrell, and Dudley Digges, and was directed by Alfred Santell and released by Fox Film Corporation.  It is based on the novel of the same name by Grace Miller White and its adaptation for the stage by Rupert Hughes.

American Writers Association: The American Writers Association (AWA) was an organization formed in 1946 in opposition to an attempt to introduce a form of trade unionism for authors.  Its members included writers such as Bruce Barton, John Dos Passos, John Erskine, James T. Farrell, John T. Flynn, Rupert Hughes, Zora Neale Hurston, Clarence Budington Kelland, Clare Boothe Luce, Eugene Lyons, Margaret Mitchell, Ayn Rand, Dorothy Thompson and Louis Waldman.

Money Talks (1926 film): Money Talks is a 1926 comedy film directed by Archie Mayo.  The film stars Claire Windsor, Bert Roach, Owen Moore and Ned Sparks.  It is written by Jessie Burns and Bernard Vorhaus, based on the story by Rupert Hughes.  The film is considered partially lost.

Reno (1923 film): Reno is a 1923 American silent melodrama produced and distributed by Goldwyn Pictures and was written and directed by Rupert Hughes.  Hughes provided his own story to the film which followed his recently rediscovered "Souls for Sale".  The film stars Helene Chadwick and Lew Cody.

Supporting paragraphs: Rupert Hughes Howard Hughes
Answer: OCD