How To Reduce Headaches While Having Enlarged Thyroid With Growth On It?

my 23 yr od daughter started suffering from light to severe headaches about a year ago. she has had a mri lots of bloodwork and the only thing they have found is a slight enlargement of her thyroid and a small growth also on her thyroid. her blood work has been normal so far for any thyroid conditions, so is just being monitored for a goiter. she has been seeing a neurologist and he has her on a sinus med giver her vitamin shots every three month and a cortisone shot in the vein, glucosmine and has a prescription for severe migrains if needed. nothing is helping. we are looking for an answer or anthing that will help with the headaches, sometimes she cant function when they are bad. she also went to a chrioprater for six month they finally said they could do no more and sent her to the neurologist. thank you for any advise Audra Huwaldt