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In patients that have a history of eating disorders, Rumination syndrome is grouped alongside eating disorders such as bulimia and pica, which are themselves grouped under non-psychotic mental disorder. In most healthy adolescents and adults who have no mental disability, Rumination syndrome is considered a motility disorder instead of an ...
Epigenetics of anxiety and stress–related disorders is the field studying the relationship between epigenetic modifications of genes and anxiety and stress-related disorders, including mental health disorders such as generalized anxiety disorder (GAD), post-traumatic stress disorder, obsessive-compulsive disorder (OCD), and more.
Pica may lead to intoxication in children, which can result in an impairment of both physical and mental development. [5] In addition, it can cause surgical emergencies to address intestinal obstructions, as well as more subtle symptoms such as nutritional deficiencies and parasitosis. [5] Pica has been linked to other mental disorders.
Any damage to the brain can cause a mental disorder. The brain is the control system for the nervous system and the rest of the body. Without it, the body cannot function properly. [71] Increased mood swings, insane behavior, and substance abuse disorders are traumatic brain injury (TBI) examples. Findings on the relationship between TBI ...
Anxiety disorders are the most common comorbidity with ARFID. 36–72% of people struggling with ARFID also have a diagnosed anxiety disorder. [15] Specific food avoidances could be caused by food phobias that cause great anxiety when a person is presented with new or feared foods. Most eating disorders are related to a fear of gaining weight.
Other models of binge eating have used various combinations of stress limited access to optional foods, and/or restriction/refeeding cycles, along with scheduled eating. [88] These specific models have been able to address the consumptive side of BN, and have proven to be useful for testing drug effects on intake behavior.
In some cases such behaviors are hypothesized to be equivalent to symptoms associated with psychiatric disorders in humans such as depression, anxiety disorders, eating disorders and post-traumatic stress disorder. Concepts of antisocial, borderline and schizoid personality disorders have also been applied to non-human great apes. [248] [249]
If the situation is not as severe, toxic stress will still alter the stress response system; these changes will cause children to react to a wider variety of stressors. [15] However, with sufficient care and support from adults, children can return their stress levels to tolerable or good. [4]