Migraine is a very common type of headache in neurology, and the causes of migraines mainly include the following aspects. The first aspect, it may be caused by the dysfunction of vasoconstriction and dilation. Constriction of the blood vessels inside the skull leads to the precursor of migraine, and then dilation leads to the onset of the headache. The second reason to consider is that migraines may be caused by the cortical spreading depression. The third reason, it may also be due to trigeminal ganglion lesions causing migraine attacks, the specific mechanism of which is actually not very clear. The occurrence of a migraine also has some triggers, for example, consuming cheese, pickled products, chocolate, and wine can all potentially trigger migraines, which should be avoided.