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Concept of disease
DR.HARIVANSH CHOPRA PROFESSOR COMMUNITY MEDICINE LLRM MEDICAL COLLEGE,MEERUT [email protected]
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OBJECTIVELEARN DEFINITION OF DISEASE
CAUSES OF DISEASE
NATURAL HISTROY OF DISEASE
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".
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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"
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From an ecological point of view, disease is defined asa maladjustment of the human organism to the environment"
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DISEASE disease" literally means "without ease" (uneasiness) disease, the opposite of ease – when something is wrong with bodily function
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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
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Sickness" refers to a state of social dysfunction.
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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").
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DISEASE CAUSATIONGERM THEORY
MULTIFACTORIAL CAUSATION
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CLASSIFICATION OF DISEASE
COMMUNICABLE DISEASES NON COMMUNICABLE DISEASESNUTRITIONAL DISORDERS
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CLASSIFICATION OF DISEASE
NEOPLASTIC DISEASES
METABOLIC DISORDERS
DEGENERATIVE DISEASES04/18/23 12DR.HARIVANSH CHOPRA
CLASSIFICATION OF DISEASE
MENTAL DISEASES
ACCIDENTSCONGENITAL DISEASE
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COMMUNICABLE DISEASES
VIRAL
FUNGAL
PARASITI
C
BACTERIAL
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AGENTS
Biological agents:Nutrient agentsPhysical agentsChemical agentsMechanical agentsAbsence or insufficiency or excess of a factor necessary to healthSocial agents
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HOST FACTORS
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DEMOGRAPHIC
GENETIC
SOCIO-ECONOMIC
LIFE STYLE
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ENVIRONMENT
PHYSICAL BIOLOGICALPSYCHO-SOCIAL
Epidemiological triad
AGENT
HOST
ENVIRONMENT
DISEASE LOAD
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HOSTAGENT INCUBATION PERIOD
DISEASE
SEVERE DISEASE
SUB CLINICA
L DISEAS
E
DEATH
RECOVERYPRE
PATOGENIC PHASE
PATHOGENIC PHASE
DISABILIT
Y
PRIMARY PREVENTIO
NSECONDRY PREVENTION
TERTIARY PREVENTION
HEALTH
PROMOTION
SPECIFIC
PROTECTION
EARLY DIAGNOSIS AND TREATMENT
DISABILITY LIMITATION
REHABILITATION
NATURAL HISTORY OF DISEASE
