Reaching concordance, an agreement with the patient on a specific treatment objective, is important to establishing a therapeutic alliance.
Treatment can proceed, if patient and clinician agree about the goal of treatment and an intervention with an acceptable risk:benefit ratio.
In most instances this agreement includes an agreement about the diagnosis, but agreement about a diagnostic label is not required. A diagnosis is an opinion about the cause of the problem. Differences in labeling a cause need not be an obstacle to intervention.
An important part of a treatment agreement is the clinician’s duty to inform the patient of any “proven treatments” that may be available.