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Hypokalemic Polymyopathy Syndrome
A sudden onset of muscle weakness, an inability to lift the head, a reluctance or inability to stand or walk, and a crouched posture may occur in cats that develop low blood potassium. Such problems characterize hypothalamic polymyopathy syndrome, commonly known as general muscle disease. If treated promptly with potassium (blood potassium must be monitored), affected cats make a full, remarkable recovery.
It seems that a small percentage of cats excrete excessive amounts of potassium in the urine and are susceptible to this syndrome.
Cat-food manufacturers, especially those producing the low magnesium diets, are now supplementing their products with extra potassium.
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