A silent migraine is a rare form that occurs without the common symptom of head pain or the headache phase. Other symptoms may include visual disturbances or aura symptoms, nausea, and extreme sensitivity to light and sound. Migraines are more common in women than men and generally occur suddenly without warning.
The exact cause of silent migraines is unknown, but research suggests it may be related to changes in blood flow or chemical levels in the brain. Some lifestyle factors may trigger these types of migraines, including stress, lack of sleep, certain medications, and food allergies.
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