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  • 1. HEALTHSTAGES OF THE HEALTH TO THE DISEASE
  • 2. Some important definitions:
    Health:it is a physical, mental and social well-being wait state, and not only the absence of disease or illness.
    Disease:it is the last stage of a process that has been developed with time and means a break of the own system of natural defense.
  • 3. Natural history of the Disease
    It is the natural evolution of any pathological process, from its beginning to its resolution, without any help of the man.
  • 4. Natural history of the Disease
    Pre-Pathogenic period:it corresponds to the time in which the people are healthy, that is to say, are in balance with it’s atmosphere.
    Pathogenic period:it corresponds at the beginning of the disease, even before the symptoms appear.
  • 5. Pre-Pathogenic period
    In this period the three elements in a disease interacts, that is formed by:
    Host
    Environment
    Agent
  • 6. Pre-Pathogenic period
    Host
    Human, organ or tissue
    Environment
    Home, school, communityor world,
    Agent
    Physical: temperature, water, air, etc.
    Chemistry: chemical substances and/or poison
    Biological: Virus, Bacteria, fungi, parasite
  • 7. Pre-Pathogenic
    So that one appears the disease is necessary that all the components of the elements are present.
    Lacks of one them can not give the interaction and disease doesn’t appear.
    When the three elements of the triad enter in balance, the pathological process begins in the guest.
  • 8. Pathogenic
    Sub-clinic Stage or Incubation period
    Clinic Horizon
    Clinic Stage
  • 9. Pathogenic
    Signs and Unspecific Symptoms:
    Fiber, general discomfort.
    Specific Symptoms :
    The manifestations of each pathology.
    Chronic:The pathology appears with signs and chronic symptoms.
  • 10. Pathogenic
    Complications:
    Other affections in the organism become jumbled.
    Sequel:
    The people present/display some type of disability or permanent alteration.
    Death:
    Final stage of the disease.
  • 11. Natural history of the disease
    PREPATOGENIC PERIOD
    The individual is healthy. There is balance between the Agent, the Guest and his environment
    PATOGENIC PERIOD
    The individual is ill. Imbalance between the Agent, the Guest and his environment exists
    CLINIC STAGE
    Clinical
    Horizon
    Defensive mechanisms. Immune response of the Guest. Specific unspecific and specific
    Mechanisms of the pathogenic agent local or systemic
    SUB-CLINIC STAGE
    Entrancedoor:
    Period of Incubation (period of latency, adaptation, reproduction, local expansion, histopathologic changes and/or systemic dissemination)
  • 12. Pathogenic Period
    In anyone of these consecutive stages, before the death, the disease can be aborted, that is to say, to return to the Pre-Pathogenic Period.
  • 13. Levels of Levell & Clark
  • 14. Predisposition
  • 15. Primaryprevention
    Secondary prevention
    Tertiary prevention
    REHABILITACION
    DIAGNOSTIC
    & TRATMENT
    PROMOTION OF
    THE HEALTH
    SPECIFIC
    PROTECTION
    LIMITATION OF THE
    DISSABILITY
    PATOGENESIS
    PRE-PATOGENESIS
    Leavell HR y Clark F: Preventive medicine forthe doctor in hiscommunity. 1965.
    Levels of Levell & Clark
  • 16. Natural history of the Disease and Levels of Medical Prevention
  • 17. Bibliografía
    www.prounisev.uanl.mx/MedicinaPreventiva/Esquema%20historia%20Natural.doc
    www.slideshare.net/naturalito/salud-etapas-de-la-salud-a-la-enfermedad/