Which is an internal variable influencing illness?

• A. Their perceptions of symptoms and the nature of their illness.
• B. The visibility of symptoms.
• C. Accessibility of the system.
• D. Social support.

Answer: (A)

Internal variables are the personal beliefs and interpretations that shape how a person experiences illness and decides what to do about it. A person’s perceptions of the symptoms, what they think the illness is, and how serious it seems drive when they acknowledge illness, seek care, and follow treatment. These mental processes occur within the individual and can vary widely, making them powerful influencers of illness behavior.

In contrast, the other factors are external: how visible the symptoms are to others, how easy it is to access healthcare, and the level of social support all come from outside the person and affect health in different ways.