Relative polycythemia
n Also known as (stress polycythemia) or (pseudopolycythemia) .
n Results from reduction of plasma volume which is caused by loss of body fluids , such as through burns, dehydration and stress .
n The total number of RBCs is normal .
n affects middle-aged men and is associated with smoking , increased alcohol intake .
n May be caused be cardiovascular problems (e.g. hypertension ) .
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