The phrase raises two questions. Let's grant that there's such a thing as a 'psychogenic' (non-physical) event. But then: is it a 'disorder', or an 'illness'? When population A starts using such a label on population B, that in itself can lead to dangers for population B. (Much of history has resulted from this kind of labelling. (Witch-hunts, for one easy example. Disagreements of differing religions for another.)

'Disorder' is a very vague label ... as is 'sick'. The parameters need careful definition; what guarantees that happens?