Factors involved in the evaluation and care of patients with phaeochromocytoma have been discussed with respect to important considerations for the consulting or practising physician. Historical, physical, biochemical and other diagnostic procedures, as well as therapeutic manoeuvres have been adequately documented so that the clinician requiring additional information in depth may seek out the pertinent literature. Utilizing this manner of approach should significantly improve the care of patients with phaeochromocytoma in the hands of physicians who have not themselves had extensive experience with this disease. However, it must be emphasized that because of the potential gravity of this condition, if the physician feels insecure in the care of a patient or has further questions, he should not hesitate to seek expert advice which will benefit both the patient and himself.