“Therapy” does not necessarily imply a disorder. Consider physiotherapy, which is quite common to address things like a pain in the back or to support the recovery of muscles after an accident. Neither are disorders. Therapy does not even imply changing something with the client, but could be simply targeted at helping the client to find better strategies to handle something that is bothering them, for example helping a client to be better deal with the fact that not everyone understands his or her sexual orientation.