How do you get rid of chronic migraine headaches?

Getting rid of migraines can be done by serotonin like replacement drugs like imitrix or by enough time going by that your body will naturally find the proper serotonin level for your body. Relaxing and a having small amount of caffeine might help if you don't already consume caffeine on a regular basis.

Stress and inflammation of the spinal nerve where it enters the skull has a direct input on starting migraines. Applying a cold compress to that area when you feel a migraine coming on will help to ease the pain, however the attack may continue.

Staying hydrated and watching for big changes in the barometer will help alleviate your symptoms as well.

I am not convinced that you can "get rid" of chronic migraines. Migraines are a medical condition that need treatment and intervention normally. Imitrex (mentioned above) is an efficient acute combination medication with Sumatriptan and Naproxen Sodium that works for some people. It might be best to see your doctor and a neurologist to rule out other causes, and see what your treatment options are. Migraines are very individual.