Hi Concern Mom -
I'm sorry to hear about your daughters troubles. It sounds miserable. I have had migranes for years - and like everyone else who suffers this curse - there are some medcines that I respond to and some that are useless to me. It shows how individual migraines really are.
Here are some suggestions for you both. Have her keep a diary of symptoms - even if on one day she has no symptoms, write that down. Write everything down - eventually a pattern often emerges, sometimes its a food or alcohol trigger, sometimes stress, sometimes hormonal changes (end of/ beginning of the menstrual cycle. Knowing the connections is a huge help - it does not mean that you can always eliminate the problem, but it certainly makes treating it easier. For example, follwoing the pattern of my headaches over the years I know this: they are mostly hormonally triggered, occasionally red wine or stress, and that my eyesight is just a little blurry the day or so before. With this knowledge I can often nip one of these episodes in the bud rather than suffer for several days.
There are many, many medications that can help - if nausea is the main problem, Phenergan or Compazine often work a charm. They are available in pill or rectal suppository form. I use liquid phenergan, just a little and hold it in my mouth and swallow it really slow. ANything else would come right back up. Staying hydrated is a challenge with nausea, but with phenergan on board, I can tolerate gatorade or something similar. Drinks with caffiene help the headache part. Sometimes Doctors treat the headache part with drugs like Zomig or Topamax but don't address the nausea. Thats the worst part, and its really easily treated.
I wish you and your daughter luck, please let me know if I can help you in any way