Hi. I'm sorry to hear about all of your daughter's problems. I know there are muscles in the neck that can cause blurry vision and dizziness, and some simple neck stretches may help with those symptoms. The other symptoms are complicated.

Parkinson's can cause depression. On Web M.D., it says that depression is often the first symptom of Parkinson's disease for a year or two before any other symptoms. Parkinson's can also cause hallucinations. Your daughter is young, but she could have juvenile onset (usually between 20-40 years old) Parkinson's.

Is she taking any kind of medication? Some medication can cause dementia-like symptoms. So can sleep deprivation, if she's not been tested for sleeping problems (apnea, etc.). Sleep deprivation can cause hallucinations and difficulty with memory and thinking.