Starting point: all social actions can be understood in terms of how they help society function effectively or not.
When a person is sick they are unable to perform social roles normally. It disturbs society’s functioning in the same way that crime does. Therefore illness can be viewed as ‘deviant’.
Illness needs to be controlled in some way and the deviant helped or forced into performing their social role once again.
Parsons suggested that illness was a social concept, so being ill meant acting different, deviant ways compared