Aman recently learned that he has a mental illness. since his diagnosis, he has begun to act according to the illness and in ways that he thinks others expect someone with a mental illness to act. which theory of health and illness best explains his situation?

symbolic interactionism

Explanation:

This refers to the way human learn to analyze and give meaning to the world around us through interactions with other people in the society. This descriptive meanings shaped individual behaviours.

Thus the behavioral pattern of people in this society will be based on the descriptive meanings they give to their society. Therefore the fundamental principle of this theory is that a society  is based on the interpretation given by the people from their descriptive meanings.

In this present scenario, that man assumed that his  society  has given descriptive meanings to his purported   behavioral patterns,  of madness and therefore  allowed  this  to shape his behavioral patterns

The nature of mental illness has been the subject of passionate discussion ... Diabetes is diagnosed by confirming high levels of fasting glucose and other . the case of some neurologic conditions), it can be stated that somatic illnesses, ... think and act and how these changes affect their relation to themselves and to others.

Explanation:

avoiding recreational drugs instead of using them