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Generalized anxiety disorder (GAD) is an anxiety disorder characterized by excessive, uncontrollable and often irrational worry about events or activities. [5] Worry often interferes with daily functioning, and individuals with GAD are often overly concerned about everyday matters such as health, finances, death, family, relationship concerns, or work difficulties.
The International Classification of Diseases (ICD) is an international standard diagnostic classification for a wide variety of health conditions. The ICD-10 states that mental disorder is "not an exact term", although is generally used "...to imply the existence of a clinically recognisable set of symptoms or behaviours associated in most cases with distress and with interference with ...
Generalized anxiety disorder is "characterized by chronic excessive worry accompanied by three or more of the following symptoms: restlessness, fatigue, concentration problems, irritability, muscle tension, and sleep disturbance". [13] Generalized anxiety disorder is the most common anxiety disorder to affect older adults. [14]
The generalized specifier for social anxiety disorder (formerly, social phobia) changed in favor of a performance only (i.e., public speaking or performance) specifier. [11] Separation anxiety disorder and selective mutism are now classified as anxiety disorders (rather than disorders of early onset). [11]
The ICD-11 includes bodily distress disorder, which bears similarities to somatic symptom disorder. While both conditions involve somatic symptoms, bodily distress disorder appears to be more strongly associated with the experience of physical symptoms, whereas somatic symptom disorder is more closely linked to psychological distress. [37]
The current version of the DSM (DSM-5) lists somatic symptom disorder (SSD) under the heading of "somatic symptom and related disorders", and illness anxiety disorder (IAD) under both this heading and as an anxiety disorder. [25] The ICD-10, like the third and fourth versions of the DSM, lists hypochondriasis as a somatoform disorder. [26]
The World Health Organization's ICD-10 describes Mixed anxiety and depressive disorder: "...when symptoms of anxiety and depression are both present, but neither is clearly predominant, and neither type of symptom is present to the extent that justifies a diagnosis if considered separately. When both anxiety and depressive symptoms are present ...
Similarly, patients with atypical depression are more likely to have anxiety disorders, (such as generalized anxiety disorder, obsessive–compulsive disorder, and social anxiety disorder), bipolar disorder, or personality disorders (e.g., borderline personality disorder, avoidant personality disorder). [4] [additional citation(s) needed]