Early Diagnosis and treatment
Level A:Primordial prevention is defined as prevention of risk factors themselves, beginning with change in social and environmental conditions in which these factors are observed to develop, and continuing for high risk children, adolescents and young adults..
Level B:Primary prevention is concerned with preventing the onset of disease; it aims to reduce the incidence of disease. It involves interventions that are applied before there is any evidence of disease or injury. Examples include protection against the effects of a disease agent, as with vaccination.
Level C:Secondary prevention has been defined as slowing the progression of a disease or its sequelae at any point after its inception.
Level D:Tertiary prevention refers to interventions designed to arrest the progress of an established disease and to control its negative consequences: to reduce disability and handicap, to minimize suffering caused by existing departures from good health, and to promote the patient’s adjustment to irremediable conditions.