My daughter (25) has hypopituitarism due to surgery removal of tumor. Last May 2013 she started having nausea for 2-3 days followed by vomiting and trips to the hospital. She takes synthroid, hydrocortisone, vimpat, lamictal, desmopressin, and trivora. Her doctor finally lowered her vimpat late November but she was recently in the hospital again. Is the vimpat or her other medications causing this?