2. Mental illness, also known as mental illness, refers to the clinical manifestations of mental activities in different degrees, such as cognition, emotion, will and behavior, caused by brain dysfunction under the influence of various biological, psychological and social environmental factors;
3. Psychological disorder refers to all kinds of abnormal psychological processes and behaviors with abnormal personality characteristics caused by physiological, psychological or social reasons. It means that a person can't act in an appropriate way recognized by society, so that the consequences of his actions are not suitable for himself and society.
Extended data:
Brief introduction of mental illness:
Generally speaking, "psychological disorder" has a general definition, which means that it is impossible to act in a way that society thinks fit, so that the consequences of its behavior are not suitable for itself or society. This "inability" may be the result of organic injury or functional injury, or both.
To carry out etiological research and provide scientific basis for basic preventive measures. Etiological prevention is the most fundamental preventive measure. Many mental health research institutions and experts in China have been engaged in the research of genetics, physiology, biochemistry, psychology and sociology of mental illness. The causes of some mental diseases with definite or basically definite causes were prevented.
Baidu encyclopedia-mental illness
Baidu encyclopedia-psychosis