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Dysthymia (/ d ɪ s ˈ θ aɪ m i ə / dihs-THIY-mee-uh), also known as persistent depressive disorder (PDD), [3] is a mental and behavioral disorder, [5] specifically a disorder primarily of mood, consisting of similar cognitive and physical problems as major depressive disorder, but with longer-lasting symptoms.
Despite numerous studies, there is no clinical evidence that "chronic" Lyme disease is caused by a persistent infection. [20] It is distinct from post-treatment Lyme disease syndrome, a set of lingering symptoms which may persist after successful treatment of infection with Lyme spirochetes.
Dissociative disorders most often develop as a way to cope with psychological trauma. People with dissociative disorders were commonly subjected to chronic physical, sexual, or emotional abuse as children (or, less frequently, an otherwise frightening or highly unpredictable home environment).
Childhood disintegrative disorder (CDD), also known as Heller's syndrome and disintegrative psychosis, is a rare condition characterized by late onset of developmental delays—or severe and sudden reversals—in language (receptive and expressive), social engagement, bowel and bladder, play and motor skills.
While the World Health Organization's ICD-11 (2022) has recognized compulsive sexual behaviour disorder (CSBD) as an "impulsive control disorder", [1] CSBD is not an addiction, [2] [3] and the American Psychiatric Association's DSM-5 (2013) and the DSM-5-TR (2022) do not classify compulsive pornography consumption as a mental disorder or a ...
The reported frequency of somatic symptom disorder, as defined by DSM-5 criteria, ranges from 25 to 60% among these patients. [44] There are cultural differences in the prevalence of somatic symptom disorder. For example, somatic symptom disorder and symptoms were found to be significantly more common in Puerto Rico. [45]
An alternate, widely used classification publication is the International Classification of Diseases (ICD), produced by the World Health Organization (WHO). [14] The ICD has a broader scope than the DSM, covering overall health as well as mental health; chapter 5 of the ICD specifically covers mental and behavioral disorders.
[citation needed] The DSM-V has since reclassified pathological gambling as gambling disorder and has listed the disorder under substance-related and addictive disorders rather than impulse-control disorders. This is due to the symptomatology of the disorder resembling an addiction not dissimilar to that of a substance use disorder. [10]