Disorders

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Disorders appearing to originate in the body, but thought to be mental, are known as somatoform disorders, including Somatization disorder. There are also disorders of the perception of the body, including Body dysmorphic disorder. Neurasthenia is a category involving somatic complaints as well as fatigue and low spirits/depression, which is officially recognized by the ICD-10 but not by the DSM-IV.Memory or cognitive disorders, such as amnesia or Alzheimer's disease exist.

Some disorders are thought to usually first occur in the context of early childhood development, although they may continue into adulthood. The category of Specific developmental disorder may be used to refer to circumscribed patterns of disorder in particular learning skills, motor skills, or communication skills. Disorders which appear more generalized may be classed as pervasive developmental disorders (PDD) also known as autism spectrum disorders (ASD); these include autism, Asperger's, Rett syndrome, childhood disintegrative disorder and other types of PDD whose exact diagnosis may not be specified. Other disorders mainly or first occurring in childhood include Reactive attachment disorder; Separation Anxiety Disorder; Oppositional Defiant Disorder; Attention Deficit Hyperactivity Disorder.

Other proposed disorders include: Self-defeating personality disorder, Sadistic personality disorder, Passive-aggressive personality disorder, Premenstrual dysphoric disorder, Video game addiction or Internet addiction disorder.