The cause of primary polycythemia is unknown; the condition is considered idiopathic. A current theory is that the disease is caused by a stem call defect. Secondary polycythemia is caused by excessive production of erythropoietin. Decreased oxygen delivery leads to appropriate overproduction of erythropoietin in the following diseases: chronic obstructive pulmonary disease, cyanotic heart disease, congestive heart failure, drug toxicities inducing hypoventilation, and prolonged exposure to high altitudes. Overproduction of erythropoietin occurs inappropriately in the following conditions: renal carcinoma, renal cysts, hepatoma, uterine fibroids, and endocrine disorders.

Relative polycythemia is caused by dehydration from the following conditions: decreased plasma volume because of diuretic therapy, persistent nausea and vomiting, decreased fluid intake, diabetic ketoacidosis, diabetes insipidus, plasma loss after thermal injury, and excessive drainage from drains or tubes.

Diabetes 2

Diabetes 2

Diabetes is a disease that affects the way your body uses food. Normally, your body converts sugars, starches and other foods into a form of sugar called glucose. Your body uses glucose for fuel. The cells receive the glucose through the bloodstream. They then use insulin a hormone made by the pancreas to absorb the glucose, convert it into energy, and either use it or store it for later use. Learn more...

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