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If you have low levels of dopamine, you might feel tired or unhappy, have low motivation, and could experience mood swings and concentration problems, the Cleveland Clinic says. High levels might ...
Atypical depression also often features significant weight gain or an increased appetite, hypersomnia, a heavy sensation in the limbs, and interpersonal rejection sensitivity that results in significant social or occupational impairment. [4] Despite its name, "atypical" depression does not mean it is uncommon or unusual. [5]
Instead, dopamine is more closely related to the drive for hunger and thirst. Although the lack of dopamine resulted in adipsia in these rats, low levels of dopamine do not necessarily cause adipsia. [9] The nigrostriatal pathway (highlighted in blue) is crucial for dopamine production and transmission. Location of the hypothalamus in the brain.
Symptoms must also cause clinically significant distress in important areas of everyday life (e.g. social or occupational). [22] For a diagnosis of a major depressive episode, the patient must also not have a history of manic or hypomanic episodes and their symptoms cannot meet the criteria for a mixed episode .
Several theories concerning the biologically based cause of depression have been suggested over the years, including theories revolving around monoamine neurotransmitters, neuroplasticity, neurogenesis, inflammation and the circadian rhythm. Physical illnesses, including hypothyroidism and mitochondrial disease, can also trigger depressive ...
There are many psychiatric and medical conditions that may mimic some or all of the symptoms of depression or may occur comorbid to it. [11] [12] [13] A disorder either psychiatric or medical that shares symptoms and characteristics of another disorder, and may be the true cause of the presenting symptoms is known as a differential diagnosis. [14]
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