On the differences and relations among health care medicine, preventive medicine, clinical medicine and rehabilitation medicine.

Health care medicine, preventive medicine, clinical medicine and rehabilitation medicine are both different and related. Health care and preventive medicine focus on health care campaigns and rational nutrition, such as epidemiology, hygiene, environmental protection and safety protection. Take social measures, publicity and education, medical and health care, etc. Preventing diseases and improving physical fitness also includes preventing disabilities and reducing the occurrence of various diseases, injuries and disabilities, which belongs to first-class prevention. Clinical medicine mainly studies the diagnosis, treatment techniques and treatment methods of diseases, such as surgery, drugs and other treatments. Clinicians should also master the knowledge and skills of disease rehabilitation, including early diagnosis and reasonable treatment of diseases, injuries and disabilities, and limit or reverse the disabilities caused by diseases, injuries and disabilities, which is secondary prevention. Rehabilitation medicine is not a continuation of medical treatment, nor is it a repetition of clinical treatment. It is not only satisfied with the diagnosis and treatment of diseases, but focuses on the study of the causes, nature, degree, consequences and rehabilitation possibilities of diseases, injuries and disabilities, as well as rehabilitation methods and measures. Its purpose is to eliminate or reduce the dysfunction caused by illness, injury and disability, to maximize their ability to live and work, to achieve comprehensive rehabilitation, and to prevent disability from turning into disability. It is the organizer and executor of secondary and tertiary prevention.