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Concept of disease  DR.HARIVANSH CHOPRA PROFESSOR COMMUNITY MEDICINE LLRM MEDICAL COLLEGE,MEERUT 5/2/2015 1 DR.HARIVANSH CHOPRA.

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Presentation on theme: "Concept of disease  DR.HARIVANSH CHOPRA PROFESSOR COMMUNITY MEDICINE LLRM MEDICAL COLLEGE,MEERUT 5/2/2015 1 DR.HARIVANSH CHOPRA."— Presentation transcript:

1 Concept of disease  DR.HARIVANSH CHOPRA PROFESSOR COMMUNITY MEDICINE LLRM MEDICAL COLLEGE,MEERUT 5/2/ DR.HARIVANSH CHOPRA

2 5/2/2015DR.HARIVANSH CHOPRA 2 OBJECTIVE LEARN DEFINITION OF DISEASE CAUSES OF DISEASE NATURAL HISTROY OF DISEASE

3 Webster defines disease as "a condition in which body health is impaired, a departure from a state of health, an alteration of the human body interrupting the performance of vital functions". 5/2/ DR.HARIVANSH CHOPRA

4 The Oxford English Dictionary defines disease as "a condition of the body or some part or organ of the body in which its functions are disrupted or deranged" 5/2/ DR.HARIVANSH CHOPRA

5 From an ecological point of view, disease is defined as a maladjustment of the human organism to the environment" 5/2/ DR.HARIVANSH CHOPRA

6 DISEASE disease" literally means "without ease" (uneasiness) ­disease, the opposite of ease – when something is wrong with bodily function 5/2/ DR.HARIVANSH CHOPRA

7 Illness" refers not only to the presence of a specific disease, but also to the individual's perceptions and behaviour in response to the disease, as well as the impact of that disease on the psychosocial environment 5/2/ DR.HARIVANSH CHOPRA

8 Sickness" refers to a state of social dysfunction. 5/2/ DR.HARIVANSH CHOPRA

9 Disease is a physiological/psychological dysfunction; Illness is a subjective state of the person who feels aware of not being well; Sickness is a state of social dysfunction, ie., a role that the individual assumes when ill ("sickness role"). 5/2/ DR.HARIVANSH CHOPRA

10 DISEASE CAUSATION GERM THEORY MULTIFACTORIAL CAUSATION 5/2/ DR.HARIVANSH CHOPRA

11 CLASSIFICATION OF DISEASE COMMUNICABLE DISEASES NON COMMUNICABLE DISEASES NUTRITIONAL DISORDERS 5/2/ DR.HARIVANSH CHOPRA

12 CLASSIFICATION OF DISEASE NEOPLASTIC DISEASES METABOLIC DISORDERS DEGENERATIVE DISEASES 5/2/ DR.HARIVANSH CHOPRA

13 CLASSIFICATION OF DISEASE MENTAL DISEASES ACCIDENTS CONGENITAL DISEASE 5/2/ DR.HARIVANSH CHOPRA

14 COMMUNICABLE DISEASES VIRAL FUNGAL PARASITIC BACTERIAL 5/2/ DR.HARIVANSH CHOPRA

15 AGENTS Biological agents: Nutrient agents Physical agents Chemical agents Mechanical agents Absence or insufficiency or excess of a factor necessary to health Social agents 5/2/ DR.HARIVANSH CHOPRA

16 HOST FACTORS 5/2/ DR.HARIVANSH CHOPRA DEMOGRAPHIC GENETIC SOCIO-ECONOMIC LIFE STYLE

17 5/2/2015DR.HARIVANSH CHOPRA 17 ENVIRONMENT PHYSICALBIOLOGICAL PSYCHO- SOCIAL

18 Epidemiological triad AGENT HOST ENVIRONMENT DISEASE LOAD 5/2/ DR.HARIVANSH CHOPRA

19 HOST AGENT INCUBATION PERIOD DISEAS E SEVERE DISEASE SUB CLINICAL DISEASE DEATH RECOVER Y PRE PATOGENIC PHASE PATHOGENIC PHASE DISAB ILITY PRIMARY PREVENTION SECONDRY PREVENTION TERTIARY PREVENTION HEALTH PROMO TION SPECIFI C PROTEC TION EARLY DIAGNOSIS AND TREATMENT DISABILITY LIMITATION REHABILITAT ION NATURAL HISTORY OF DISEASE


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