*symptomatology*

n. [ Gr. &unr_;, &unr_;, symptom + -logy: cf. F. symptomatologie. ] (Med.) The doctrine of symptoms; that part of the science of medicine which treats of the symptoms of diseases; semeiology. [ 1913 Webster ]

☞ It includes diagnosis, or the determination of the disease from its symptoms; and prognosis, or the determination of its probable course and event. [ 1913 Webster ]