I have a 73 y/o female friend who returned from a trip to Ireland last Tuesday. She became very ill on the 9 hour flight home with dizziness and nausea. Since returning home, she has headache above one ear, shooting pain occassionally in ear and nose accompanied now by diarrhea. Her visit to primary care physician did not help. He looked only at one ear. She also has several episodes each day of sweating. She has a history of vertigo occassionally and sinus issues. She is taking meclazine and requested steroids and is awaiting RX. The diarrhea began several days after her return. Any ideas for further workup?