Migraine Headaches Support Group
Migraine is a neurological disease, of which the most common symptom is an intense and disabling episodic headache. Migraine headaches are usually characterized by severe pain on one or both sides of the head and are often accompanied by photophobia (hypersensitivity to light), phonophobia (hypersensitivity to sound) and nausea.

My personal opinion, if it REALLY worked, we wouldn't need headache specialists and we would all walk around with these piercings.
Whatever you decide to you, I wish you the best of luck.