Editing Comorbidity (section)

=== Inception of the term ===
Many centuries ago the doctors propagated the viability of a complex approach in the diagnosis of disease and the treatment of the patient, however, modern medicine, which boasts a wide range of diagnostic methods and a variety of therapeutic procedures, stresses specification. This brought up a question: How to wholly evaluate the state of a patient who has a number of diseases simultaneously, where to start from and which disease(s) require(s) primary and subsequent treatment? For many years this question stood out unanswered, until 1970, when a renowned American doctor epidemiologist and researcher, [[Alvan Feinstein|A.R. Feinstein]], who had greatly influenced the methods of clinical diagnosis and particularly methods used in the field of clinical epidemiology, came out with the term of "comorbidity". The appearance of comorbidity was demonstrated by Feinstein using the example of patients physically affected by rheumatic fever, discovering the worst state of the patients, who simultaneously had multiple diseases. In due course of time after its discovery, comorbidity was distinguished as a separate scientific-research discipline in many branches of medicine.<ref>{{cite journal |last1=Feinstein |first1=Alvan R. |year=1970 |title=The pre-therapeutic classification of co-morbidity in chronic disease |journal=Journal of Chronic Diseases |volume=23 |issue=7 |pages=455–68 |doi=10.1016/0021-9681(70)90054-8 |pmid=26309916}}</ref>