If you had to boil it down, what is cardiomyopathy?

Weakness or thicknes: Improper function of the heart due to problems with the heart muscle. It can be either weakness of the muscle decreasing its pump function or abnormal thickness of parts of the heart muscle increasing resistance to blood flow into and out of the heart.

Weak heart muscle: Cardiomyopathy is a generic term for any type of structural or functional heart abnormality resulting from abnormal contraction and/or relaxation of heart muscle fibers.

Heart muscle disease: Cardiomyopathy is heart muscle disease. It can vary in terms of causes, symptoms (none to severe), requirements for treatment, and projected outcomes. Therefore, cardiomyopathy is broken down into specific types that help patients and practitioners to speak a common language about diagnosing and approaching the condition.