My daughter, age 7, has been complaining about dizzy spells for the past two months. She says she feels it after PE or other physical activity. Sometimes she has nausea associated with it. She feels dizzy when first lying down at night. If she plays on a merry-go-round, hours later she still feels like she is spinning. She does not have the best balance even though she's been doing Martial Arts for a year and also has sport activities. Should she see a specialist? Thank you.