Jul 7th, 2016
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mental illness associated illnesses well explained

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AETIOLOGY OF MENTAL ILLNESSEtiology can be grouped into three broad categories ie biological, psychologicaland social factors. The three all interact in causing mental illness and responses totreatment. They are intertwined and inter related.No single theory is sufficient to explain the development of mental illness. Theadoption of Biopsychosocial model of disease causation gives a better/ adequateunderstanding of the disease process (G. Engel).A) Biological factors1) Genetics- genes control various aspects of human life egtemperament/behaviour, body size, intellect, biochemistry.. Studies of parents,siblings, twins, close relatives, adoption. Chromosomal eg .. (predispose)2) Biochemical/Neurochemical- neurotransmitters imbalances in specific regionsof brain. Effects of serotonin, dopamine, noradrenaline, gaba, ach, glutamate,. Theeffects of hormones also vital eg testesterone, oestrogen, cortisol(steroids),melatonin, thyroid hormones3) chronic/acute Physical illness, chemical intoxications and drugs of abuse,trauma of brain and brain infections may also lead to development of mentaldisorders, Devtal disorder in brain. etcB) Psychological factors1) Psychoanalytic theory- S freudThat all human beings are born with innate instincts which govern behavior.Unsatisfied instincts create tension within the individual and these manifests in theform of psychological illness.2) Psychosocial theory by E Erickson. It was an extension of psychoanalytictheory. It

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