He uses them interchangeably. I have a hard time bringing myself to care, either way. I find 'patient' mildly....infantilizing, maybe? It doesn't strike me as a particularly empowering word. On the other hand, 'patient' allows me to think of therapy as 'treatment' or 'medical care,' which brings an aspect of legitimacy. Simplifies the issue a lot.

'Patients' have conditions for which the seek treatment. I can fit myself into that mould.

But 'Clients'? What do they have? What is therapy to them? The answers are more complicated; the framework less ready-made.