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A prodrome (group of symptoms that precedes a condition) can occur in the days prior to migraine. Symptoms of this prodrome can include depression, food cravings, yawning, neck stiffness, hyperactivity, irritability, confusion, diarrhea, or constipation.
Headache is the best known symptom of migraine but certainly not the only one. I have aura (visual disturbance) extreme tiredness, coldness, neck pain, dizziness, can't think properly, a sort of low blood sugar feeling, amongst other things. well, in fact most of the classic migraine symptoms, just no pain .