A mental disorder or mental illness is a psychological pattern, potentially reflected in behavior, that is generally associated with distress or disability, and which is not considered part of normal development of a person's culture. Mental disorders are generally defined by a combination of how a person feels, acts, thinks or perceives. This may be associated with particular regions or functions of the brain or rest of the nervous system, often in a social context. The recognition and understanding of mental health conditions have changed over time and across cultures and there are still variations in definition, assessment and classification, although standard guideline criteria are widely used. In many cases, there appears to be a continuum between mental health and mental illness, making diagnosis complex. According to the World Health Organisation (WHO), over a third of people in most countries report problems at some time in their life which meet criteria for diagnosis of one or more of the common types of mental disorder.

Maria Bamford (born September 3, 1970) is an American stand-up comedian and voice actor. She is best known for her portrayal of her dysfunctional family and self-deprecating comedy involving jokes about depression. Her comedy style draws upon surrealism and incorporates voice impressions of various character types.

Bamford was born at the naval base in Port Hueneme, California, where her father Joel was serving as a Navy doctor. She grew up there and in Duluth, Minnesota, where she attended Chester Park Elementary and The Marshall School. She went on to attend Bates College, the University of Edinburgh, and the University of Minnesota, where she earned a degree in Creative Writing. She started doing stand-up in Minneapolis, Minnesota, at age nineteen, at Stevie Ray's Comedy Cabaret. Bamford then joined Edinburgh's improvised comedy show The Improverts. Maria has one sister, Sarah Bamford Seidelmann.

Bamford has been in a number of movies and television shows, including voice appearances in cartoons. The best-known aspect of her act are her various impersonations (including her mother and her agent). Her comedy often takes the form of vignettes rather than the comedy stand-up standard setup/punchline format.

Demetria Devonne "Demi" Lovato (born August 20, 1992) is an American singer-songwriter, musician, and actress. Her earliest roles included Angela on Barney & Friends, before she became better known for her starring roles in the Camp Rock movies, as Sonny Munroe in the Disney sitcom Sonny with a Chance, and as the star of the 2009 movie Princess Protection Program. She is also involved in philanthropic activities through charity work and various social and environmental causes.

As a solo musical artist, Lovato released her debut album Don't Forget on September 23, 2008. The album debuted at number two on the Billboard 200 selling 89,000 copies in the first week. It has since shipped over 500,000 copies, earning a gold certification in the United States. Lovato released her second album, Here We Go Again, on July 21, 2009. The album debuted at number one on the Billboard 200, selling 108,000 copies in the first week. Her third studio album, Unbroken, was released on September 20, 2011 and peaked at number four on the Billboard 200. She is working on her fourth studio album.