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The possible causes of anxiety and depression are often similar to one another and the comorbidity of the two disorders is quite high, with 60% of those with depression also having some form of anxiety disorder. [11] There are multiple possible causes for mixed anxiety-depressive disorder, but they can be separated into three main categories ...
Sensory deprivation or perceptual isolation [1] is the deliberate reduction or removal of stimuli from one or more of the senses. Simple devices such as blindfolds or hoods and earmuffs can cut off sight and hearing, while more complex devices can also cut off the sense of smell, touch, taste, thermoception (heat-sense), and the ability to know which way is down.
Treatment of comorbid depression or anxiety if present. [citation needed]. Educating patients on the causes of their symptoms might help them learn to manage both the psychiatric and physical aspects of their condition. Psychological counseling is often warranted given the known relationship between conversion disorder and emotional trauma.
Sensory cravings, [13] including, for example, fidgeting, impulsiveness, and/or seeking or making loud, disturbing noises; and sensorimotor-based problems, including slow and uncoordinated movements or poor handwriting. Sensory discrimination problems, which might manifest themselves in behaviors such as things constantly dropped. [citation needed]
Anxiety and mood disorders are frequent comorbidities. Anxiety disorders have been found to occur more commonly in the ADHD population, as have mood disorders (especially bipolar disorder and major depressive disorder). Boys diagnosed with the combined ADHD subtype are more likely to have a mood disorder. [85]
In Europe, Africa, and Asia, lifetime rates of anxiety disorders are between 9 and 16%, and yearly rates are between 4 and 7%. [102] In the United States, the lifetime prevalence of anxiety disorders is about 29%, [103] and between 11 and 18% of adults have the condition in a given year. [102]
Most research that looked at additional mental disorders or self-reported psychopathological symptoms among those with somatic symptom disorder identified significant rates of comorbidity with depression and anxiety, but other psychiatric comorbidities were not usually looked at. [2]
For example, when the brain lacks serotonin, a chemical that regulates the brain's functioning, it can lead to depression, appetite changes, aggression, and anxiety. Another cause of mental distress can be exposure to severely distressing life-threatening situations and experiences. A third cause, in very rare cases, can be inheritance.