The Disease ProcessObjectives

• Define disease

• Define illness

• Identify the process of inflammation

• Identify 3 means of protection provided by the immune system

• Identify allergic reaction

Define disease

• Pathological condition of the body in response to alteration in normal body harmony: disruption of homeostasis

• Known by medical classification and distinguishing features

Disease Result of:

• Pathogens• Trauma• Physical and

chemical agents• Genetics• Metabolic or

nutritional disorders

Define Illness

• Describes the condition of a person who is experiencing disease; how they feel, what they think about disease and how it will affect their lives

Identify Process of Inflammation

• Redness• Swelling• Pain• Heat• Loss of Function

3 Means of Protection by Immune System

1. Normal body structures block entry of pathogens (skin, mucous membranes)

2. Inflammatory response (pathogens identified as foreign, or allergen) engulfed by phagocytosis

3. Specific immune response (through natural or acquired immunity)

Identify allergic reaction

• Occurs when immunity malfunctions

• Predisposing factors include family history, stress, physical condition