Three aims of a Health Extension Officer (Main Focus of a clinician):
Promote good health
Prevent disease
Treat diseases
Aims of treating a disease:
Cure a patient (not always possible)
Relieve the patient's symptoms (almost always possible)
Reassure and encourage the patient and his/her relatives (always possible)
Three important skills of a HEO:
Treat, prevent, and promote.
Two accurate terms used under-diagnosis:
Prevalence and Incidence.
Prevalence
The total number of persons with the disease at a stated time in a stated population
Incidence
The number of new persons developing the disease during a stated time in a stated population.
Ten common kinds or classifications of disease
Congenital, traumatic, inflammatory, neoplastic, degenerative, chemically induced, malnutrition, psychological, body system failure, and unknown.
The causes of many of these classifications of diseases are known some of the classifications are based on the cause of disease.
There are also causes of diseases that are not yet known about.
The most common causes of diseases in tropical and developing countries are infections with organisms, trauma, and malnutrition.
Epidemiology answers the questions of who, how many, when, where, how, and why.
Symptoms
What the patient feels and presents to a clinician as a presenting complaint.
Specific questions (SQ) or Specific interrogation (SI)
Questions asked to discover other symptoms of a disease of any other system of the body including those the patient has already talked about.
Past history
Questions were asked about the disease, admission to the ward, drugs taken, treatment given by traditional healers, previous attacks of the same illness, other illnesses, operations, accidents, and previous and present pregnancies.