I have Migraines with aura and occasional Familial Hemiplegic Migraine (which I think is the same as you are referring to above.)  There are two subtypes of Migraine w/aura.  One is FHM (Familial Hemiplegic Migraine) and SHM (Sporadic Hemiplegic Migraine.)  Family history plays a major part in determining which is your subtype.

I accepted long ago that Migraine pain never goes away with the first dose of treatment - at least not for me.  Hemiplegic Migraines can last several days to weeks.

After 17 years of trying everything there is, because I didn't know enough about my own Migraine type, here is what I would suggest:

1) Stay away from any abortive (Triptan) Migraine treatments - they are constrict blood vessels and can be a cause for concern with regard to stroke, etc.

2) Preventative medications are highly recommended and very effective for many people, but do NOT treat the symptoms if you do have an attack.

3) Effective pain medications to treat the Migraine pain - you will have it if Triptans aren't part of your treatment and preventatives do NOT treat the symptoms.

4) It's hard to do, but do as much as you can to OBSERVE as many of your migraine attacks as you can.  It pays off.  I hid in a dark room for 10 years, and then realized just how misdiagnosed and mistreated Migraines are - because the information sufferers give their doctors is lacking essential detail.  Once I was able to feel some comfort knowing I had a pain medication I could take, I started to "watch" the migraine - the aura, the timing, spots, lights, etc.  Heck, I even drew pictures for my doctor.

5) If you don't want to rely on narcotics or opioids for pain relief, ask your Neurologist about Neurontin/Gabapentin or other similar medication (used in patients with Fibromyalgia and Shingles) - it's used to treat nerve pain.

6) Last but not least, I have been reading about the positive effects of an Occipital Nerve Block (like an epidural, but it works for headaches.)  A Spinal Diagnostics Specialist should know all about it.  My Spinal Diagnostics Specialist (who happens to also be my Pain Mgmt Specialist) has told me that an ONB will not stop the Migraine attack or visual aura.  I would still have Migraines, but I wouldn't feel them.  I haven't done it yet.

7) I believe the nausea is caused by the Migraine PAIN.  But that's my own observation.  If you kick the pain symptom, you shouldn't nave nausea.  But Phenergen is a good nausea med.

8) Finally, BENADRYL - this has been mentioned a lot in aiding Migraines and the symptoms because of the sedative properties.

I'd say research the above things, and hopefully you will find the answers you need.

Good Luck.

Smile.