Multiple morbidities or Multimorbidities is a term which means co-occurring diseases. For example, a person could have diabetes and heart disease and high blood pressure. In the Medicare population, 65% of patients have two or more chronic illnesses. Some of the difficulties experienced by patients include: poor coordination of medical care, managing multiple medications, and aggravation of one condition by symptoms or treatment of another.
These are common in people who are elderly, malnourished, or poor.