Hello @gjp1 and welcome to Mayo Connect. I appreciate your interest in helping your mom with this uncomfortable set of symptoms. On Connect we are not medical professionals, so we can't really give medical advice, but we can share our experiences.

From your post, it sounds as if she is really struggling with nausea and lightheadedness as her main symptoms. Is my understanding correct? While you have mentioned her seeing a lot of different specialists, I'm wondering if she has been seen by an ENT? Often inner ear problems can result in dizziness and nausea and make it difficult to function. Has she been to an ENT?

There are wonderful therapies for vertigo problems including Vestibular Therapy which can be most helpful in combatting these symptoms. While this type of therapy does not cure vertigo, it can certainly lessen the symptoms and make life a bit easier. Has your mom been referred for vestibular therapy?

I look forward to hearing from you again as you seek answers for your mom. Will you post with any other questions or updates?