Comorbid conditions are conditions that occur at the same time as but independently of each other. With Migraine disease, perhaps the most common comorbid condition is major depressive disorder (clinical depression). Approximately 47% of Migraineurs also experience major depressive disorder, but neither causes the other.
Comorbid conditions can have significant impact on effective treatment of the individual disorders. Thyroid diseases, including hypothyroidism, are among the conditions now know to often be comorbid with headaches and Migraines. A strong connection has been found between hypothyroidism and new daily persistent headache (NDPH) and chronic Migraine.
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