Migraine is a neurological disease characterized by recurrent moderate to severe headaches often in association with a number of autonomic nervous system symptoms. The word is derived from the Greek á¼¡Î¼Î¹ÎºÏÎ±Î½Î¯Î± (hemikrania), pain on one side of the head, from á¼¡Î¼Î¹- (hemi-), half, and ÎºÏÎ±Î½Î¯Î¿Î½ (kranion), skull. Chronic migraine is a complication of migraines, and is a headache that fulfills diagnostic criteria for migraine headache and occurs for a greater time interval. 2  Specifically, greater or equal to 15 days/month for longer than 3 months.
The IMA was founded in 1919 as the National Association of Cost Accountants (NACA), which underwent a name change to the National Association of Accountants (NAA) in 1957.In 1991, the organization's name was changed to the Institute of Management Accountants.EFINITION of 'Institute Of Management Accountants-IMA'. The umbrella association for financial professionals. The Institute of Management Accountants has more than 60,000 members worldwide, as of 2010. It confers the prestigious certified management accountant (CMA) designation.
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