PSYCHOLOGICAL DISORDERS - LESSON 177

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Post-traumatic stress disorder:- This is the development of symptoms like intense fear, helplessness, insomnia, nightmares, and diminished responsiveness to the external world following exposure to a traumatic event.

Delirium and dementia:- These both are the disorders of abnormal mental processes of thinking, perception, reasoning and judgement also called cognition.

Delirium is an acute and temporary disturbance in the ability to focus attention, perception, incoherent speech, irrelevant, rambling and  disorientation to time, place or person with memory impairment. It is a systematic syndrome caused by a chemical or disease-process which is disrupting the neurons of the cerebral cortex. Delirium tremens is brought on by withdrawal after prolonged periods of heavy alcohol ingestion.

Dementia is a habitual loss of intellectual abilities involving impairment of judgment, memory, and abstract thinking as well as changes in personality. Dementia may be occurred by the conditions, some reversible, and some progressive, involving damage to the brain. The most general cause is Alzheimer's disease, but others are cerebrovascular disease, central nervous system infection, tumors, brain truama and Parkinson's and Huntington's disease.

In the next post we would learn about remaining psychological disorders.  Okay.                              

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