neuro problems undiagnosed 5 months

symptoms
- Severe Forehead pain.
- Left eye pressure/blurriness
- Constant Head pressure
- lightheadeness/faintness.
- Numbness in both feet
- Difficulty swallowing
- Neck pain/stiffness
- Difficulty walking
- severe Hands shaking
- shortness of breath
- Can no longer write but can 2 finger type with difficulty.

I have seen neuro-opthomoligist, neurologist, PCP, ENT, urologist, physical therapy, dentist, allergist and cardiologist. None has been able to figure out what is wrong.
I have had ct scan of brain with contrast, MRI of brain with contrast, MRI of cervical, thoracic and lumbar spine. Numerous blood tests, been hospitalized - all no problem found