How would someone tell the difference between a hemiplegic migraine and a tia? dont both of them have similar symptoms that go away after awhile?

Migaine hurts a lot: Tia typically does not cause pain, or only little. Migraine, on the other hand, often hurts quite a bit, as well as being a recurrent thing. Migraine may also have other symptoms such as sound and light sensitivities, and possibly nausea/vomitting while TIA often not having such symptoms. Being 21, i certainly hope you are not havin tia. Live well/healthy, mariea79. Consult doc. Good luck.

Headache : Usually tias don't have as severe headaches as migraines. Talk to a neurologist.