Cardiomyopathies can generally be categorized into two groups, based on World Health Organization guidelines: extrinsic cardiomyopathies and intrinsic cardiomyopathies.
Intrinsic cardiomyopathies are generally classified into four types, but additional types are also recognized:
Signs and symptoms Cardiomyopathy is usually found incidentally - "case finding" - by healthcare professionals during a routine checkup. The only test for hypertension is a blood pressure measurement. Hypertension in isolation usually produces no symptoms although some people report headaches, fatigue, wanting to sleep more than usual, dizziness, blurred vision, facial flushing or tinnitus. 
Malignant Cardiomyopathy (or accelerated Cardiomyopathy) is distinct as a late phase in the condition, and may present with headaches, blurred vision and end-organ damage.
Cardiomyopathy is often confused with mental tension, stress and anxiety. While chronic anxiety and/or irritability is associated with poor outcomes in people with hypertension, it alone does not cause it. Accelerated hypertension is associated with somnolence, confusion, visual disturbances, and nausea and vomiting (hypertensive encephalopathy)
|Phenotype||Inheritance pattern||Chromosomal locus||Gene||Protein||Skeletal myopathy|
|Dilated cardiomyopathy||X-linked||Xp21||dystrophin||Dystrophin||Duchenne / Becker muscular dystrophy|
|Autosomal dominant||15q14||actin||Actin||Nemaline myopathy|
|5q33||δ-sarcoglycan||δ-sarcoglycan||Limb girdle muscular dystrophy 2F|
|1q32||Troponin T||Troponin T|
|14q11||β-myosin heavy chain||β-myosin heavy chain|
|Midna||Mitochondrial respiratory chain||Mitochondrial respiratory chain||Mitochondrial myopathy|
|Dilated cardiomyopathy with conduction disease||Autosomal dominant||1q21||lamin A/C||Lamin A/C||Emery-Dreifuss muscular dystrophy|
|Hypertrophic cardiomyopathy||Autosomal dominant||14q11||β-myosin heavy chain||β-myosin heavy chain|
|14q11||β-myosin heavy chain||β-myosin heavey chain|
|1q32||Troponin T||Troponin T|
|12q23||Troponin T||Troponin T|
|11q11||myosin-binding protein C||myosin-binding protein C|
|3p21||myosin essential light chain||myosin essential light chain|
|3p21||myosin regulatory light chain||myosin regulatory light chain|
|Hypertrophic cardiomyopathy with Wolf-Parkinson-White syndrome||7q3||AMPK||AMPK|
|MIDINA||Mitochondrial respiratory chain||Mitochondrial respiratory chain||Mitochondrial myopathy|
|Left ventricular noncompaction||X-linked||Xq28||G4.5||Tafazzin||Barth syndrome|
|Autosomal dominant||18q12||α-dystrobrevin||α-Dystrobrevin||Muscular dystrophy|
Table from article * The Failing Heart. Nature. Retrieved on June 15., 2007.
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