Vertigo Mystery

Frustration again as Caroline calls me from school this morning to report that she was having scrolling vision and vertigo again, starting half way through her first class.  I am at a loss so we are back to the doctor this afternoon.  We had not gotten the call from the neurologist so we are going to be asking for that consult again ASAP.  I divided her morning med dose of the lamictal up so she takes half of it at noon thinking this was the problem, but I guess not.  This issue happened this weekend on Sunday so it isn't just occurring in school.  She is missing way too much school so early in the school year.  I am praying for answers.