Competition is the rule of the animal kingdom ... 'me versus the other person' - that is animal.
The issue of survival will be expressed at all levels. At the level of pathology they feel victimised by their complaint ... as if it is a separate entity that is stronger than him, that dominates or suppresses him, that takes away his freedom - 'the tonsillitis is killing me'.
And this is known only when you reach the core of the case.
There will be a sensation, but it will not be constant: it will be part of a bigger picture with multiple sensations. You will see a process ... which is part of the animal's life story. What is constant is the survival aspect.