if the therapist thinks you are a danger to yourself or others, or have been abused, they can report it.

as for touching, they should ask before touching the client, and be respectful if the client says no.

as for looking as scars, i think that is up to the individual case. there is no rule that says that is or is not ok. they can ask, but i think its ultimately up to the client whether or not they say ok.

all therapists follow a general code of ethics that you can probably look up online. but a lot of times, for the little things like that, its up to the therapist how strong their boundaries are and a lot of times, the boundaries vary with the individual clients.