Pat, she got a shot on the ship and some pills but didn't feel 100% better until we got off the ship. Guess she had it for a week or so....The doctor said it is common in people over 50 or so....like you, she felt fine when her head was turned a certain way....the doctor mentioned something about "crystals" in the ears shifting out of position and did suggest some head movement excerises to help get them back in the right spot.....take care....Jim