A somatoform disorder can be defined as "a distressing disorder in which there is physical pain that can't be traced to a physical cause." People with a somatoform disorder are typically very distressed about their physical health and tend to assume and worry that small symptoms of illness, such as a sore throat, are a sign of a terrible illness, like throat cancer. Somatoform disorders do not have to do with the skin specifically, and people with somatoform disorders are truly convinced of their physical ailments. Furthermore, somatoform disorders can be disabling but somatoform disorders account for a very small percentage of disabilities and are not the medical term for having a disability. 

DID occurs when, usually as a result of early childhood trauma and abuse, someone has two or more distinct personalities rather than one integrated one. The media has been fascinated with DID, leading to well-known movies such as Sybil. However, tests conducted on patients with DID have been inconclusive and it is strange that nearly all of the cases of reported DID have been in the US. These factors have led many people to question the true existence of the disorder, unlike the well-documented and well-researched disorders of OCD, PTSD, major depressive disorder, and generalized anxiety disorder. 

Refusing to eat is more common in Anorexia Nervosa cases than in Bulimia Nervosa cases. A person suffering from Bulimia Nervosa typically binge eats—they over-eat and consume a large amount of calories in a short amount of time. Following this eating, they purge—they rid themselves of what they have eaten by using laxatives, diuretics, or making themselves vomit.

Camille's symptoms are indicative of sleep apnea, which is characterized by temporary cessations of breathing during sleep that cause repeated momentary awakenings throughout the night. In this way, sleep apnea can disrupt slow-wave, deep sleep.

Somatoform disorders involve physical symptoms that have no known physiological cause, which may or may not be due to a psychological problem. Conversion disorder is a somatoform disorder that includes the presence of neurological symptoms without an identified cause. Schizoaffective disorder involves symptoms of both schizophrenia and a mood disorder, such as depression or Bipolar disorder. Generalized anxiety disorder is an anxiety disorder that involves anxiety and worry over a number of things in one's life. Dissociative identity disorder falls under the category of dissociative disorders and includes the presence of multiple personalities. Bipolar disorder involves at least one episode of mania (i.e. high energy, grandiosity, impulsivity), and may or may not include periods of depression.

"Antisocial personality disorder" (ASPD) is characterized by a disregard for the safety and feelings of others, impulsivity, deceitfulness, and law breaking. ASPD is three times more common in men than in women, while all of the other answer choices are more commonly seen in women.

As stated in the DSM-5, the correct answer is "gender dysphoria involves feeling that your emotional and psychological identity as a certain gender is different than your biological sex." All of the other answer choices are false regarding gender dysphoria. 

"Chronic fatigue syndrome" is not an eating disorder; however, this syndrome is more commonly seen in individuals with poor nutritional habits (e.g. those with eating disorders). All of the other answer choices are categorized in the DSM-V as eating disorders. 

All of these symptoms—in addition to problems with motor coordination, social perception, and cognitive functions and other distinctive facial features—are associated with "fetal alcohol syndrome" (FAS). This results from the individual’s mother ingesting alcohol during pregnancy, leading to abnormalities in fetal development. Down syndrome, while associated with lower IQ, typically involves a higher level of cognitive functioning than FAS. Additionally, Down syndrome is related to three (instead of the normal two) copies of chromosome 21. Parkinson’s disease and Huntington’s disease are both more associated with abnormalities in motor function and muscular coordination; while some cognitive disturbances or slowing may occur, the IQ is not as drastically affected and the distinctive facial features listed have not been observed.

Randall's episodes are most likely a feature of a rare class of disorders called dissociative disorders. Dissociative disorders are a class of disorders in which people lose contact with portions of their consciousness or memory, resulting in disruptions in their sense of identity.