Genetic factors and environmental surroundings could play a role in causing migraines.
Migraine headaches often begin in childhood through early adulthood.
The onset of a migraine can be caused by changes in interaction between the brainstem and pain pathways (such as the trigeminal nerve).
Chemical imbalances in the brain lead to drops in serotonin (chemical which helps regulate pain).
Low levels of serotonin are subsequently overpowered by neuropeptides sent to the outer part of the brain resulting in a headache.