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Psychological makeup can also play a role in vulnerability to depression. People who have low self-esteem, constantly view themselves and the world with pessimism, or are readily overwhelmed by stress, may be especially prone to depression. [33] Community surveys find that women are more likely than men to say they are under stress.
With appropriate care from adults, young children can easily cope with tolerable stress and turn it into positive stress. However, if adult support is deficient in a child's coping stages, then tolerable stress can become detrimental. [4] Toxic stress can occur when experiences are long in duration and intensity. [14]
The biology of depression is the attempt to identify a biochemical origin of depression, as opposed to theories that emphasize psychological or situational causes. Scientific studies have found that different brain areas show altered activity in humans with major depressive disorder (MDD) . [ 1 ]
No definitive cause of tic disorders has been declared, but for the most part, the cause lies within biological, chemical, or environmental factors. Studies have shown that abnormal neurotransmitters, such as dopamine and serotonin, which are active in chemical messages in the brain, can serve as a cause of tic disorders.
The combination of dopamine, serotonin and oxytocin is already pretty dreamy, but the brain takes that natural high to the next level when you reach the big O by releasing endogenous (i.e., made ...
DDM can be caused by psychiatric disorders like depression and schizophrenia, brain injuries, strokes, and neurodegenerative diseases. [ 4 ] [ 3 ] [ 1 ] [ 5 ] Damage to the anterior cingulate cortex and to the striatum , which includes the nucleus accumbens and caudate nucleus and is part of the mesolimbic dopamine reward pathway , have been ...
Damage to the frontal cortices of the brain can cause deficits in behavior that can severely impact an individual's ability to manage their daily life. [11] As such, the period after a traumatic brain injury such as a frontal lobe disorder can be marked by emotional dysregulation. This is also true of neurodegenerative diseases. [12]
Relationship between neurogenesis and depression. Stress has been reported to impair many aspects of hippocampal neurogenesis, including: [3] Proliferation rate of neural progenitor cells; Survival of neuroblasts and immature neurons; Growth and development of new neuron; The neurogenesis hypothesis of depression posits that: [3]