(Cardiac) syndrome X is angina without clear atherosclerosis on coronary angiography. It occurs more often in young women. Some studies have found increased risk of other vasospastic disorders in Syndrome X patients, such as migraine and Raynaud's phenomenon. It is treated with calcium channel blockers, such as nifedipine.

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The terms Syndrome X or Metabolic syndrome X may also be referring to metab ...
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