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12% per year [ 4 ][ 8 ] Anxiety disorders are a group of mental disorders characterized by significant and uncontrollable feelings of anxiety and fear [ 2 ] such that a person's social, occupational, and personal functions are significantly impaired. [ 2 ] Anxiety may cause physical and cognitive symptoms, such as restlessness, irritability ...
It includes seven major categories: insomnia disorders, sleep-related breathing disorders, central disorders of hypersomnolence, circadian rhythm sleep-wake disorders, sleep-related movement disorders, parasomnias, and other sleep disorders. Each of these categories has several subgroups: [17] 1.
Impulse-control disorder (ICD) is a class of psychiatric disorders characterized by impulsivity – failure to resist a temptation, an urge, or an impulse; or having the inability to not speak on a thought. Many psychiatric disorders feature impulsivity, including substance-related disorders, behavioral addictions, attention deficit ...
About 13–23% of the general population. [8] Somatic symptom disorder, also known as somatoform disorder, or somatization disorder, is defined by one or more chronic physical symptoms that coincide with excessive and maladaptive thoughts, emotions, and behaviors connected to those symptoms. The symptoms are not deliberately produced or feigned ...
The symptoms of anxiety and depression disorders can be very similar. A diagnosis of mixed anxiety–depressive disorder as opposed to a diagnosis of depression or an anxiety disorder can be difficult. Due to this, it has long been a struggle to find a singular set of criteria to use in the diagnosis of mixed-anxiety depressive disorder. [3]
The International Classification of Diseases (ICD) treats this condition differently from the Diagnostic and Statistical Manual of Mental Disorders (DSM). According to the ICD-11, acute stress reaction refers to the symptoms experienced a few hours to a few days after exposure to a traumatic event.
Idiopathic hypersomnia (IH) is a neurological disorder which is characterized primarily by excessive sleep and excessive daytime sleepiness (EDS). [1] Idiopathic hypersomnia was first described by Bedrich Roth in 1976, and it can be divided into two forms: polysymptomatic and monosymptomatic. [2][3] The condition typically becomes evident in ...
Amygdala (in red) brain structures linked to anxiety disorders. The pathophysiology of GAD is an active and ongoing area of research often involving the intersection of genetics and neurological structures. [9] Generalized anxiety disorder has been linked to changes in functional connectivity of the amygdala and its processing of fear and ...