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Myxedema psychosis is a relatively uncommon consequence of hypothyroidism, such as in Hashimoto's thyroiditis or in patients who have had the thyroid surgically removed and are not taking thyroxine. A chronically under-active thyroid can lead to slowly progressive dementia , delirium , and in extreme cases to hallucinations , coma , or ...
Recent research from the United Kingdom suggests that the onset of graphic nightmares and hallucinations, or 'daymares,' could be a sign of autoimmune conditions developing or flaring up.
Nightmares can be caused by extreme pressure or irritation if no other mental disorder is discovered. The death of a loved one or a stressful life event can be enough to cause a nightmare, but conditions such as post-traumatic stress disorder and other psychiatric disorders have been known to cause nightmares as well. [14]
Myxedema coma is rare but often fatal. It occurs most often in elderly women and may be mistaken for one of the chronic debilitating diseases common to this age group. [9] Though the exact cause of myxedema is still unclear, a wealth of research has demonstrated the importance of iodine. [10]
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Some studies contradict the psychological findings. For example, a large 2002 study found "no statistical association between thyroid dysfunction, and the presence of depression or anxiety disorder." [31] In one study on hospitalised elderly patients, over half had cognitive impairment with either dementia or confusion. [32]
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Dementia, however, can present early in its disease course with depressive symptoms, meaning that this association could actually be reflecting that dementia causes late life depression. [23] Studies that have directly tried to determine whether depression is an independent risk factor for dementia have led to inconclusive results.