I had an MRI recently and was diagnosed with low-lying cerebellar tonsils. One is greater than the other suggestive of tonsillar ectopia with evidence of Chiari maformation. The measurment was 4mm. Would this cause my dizzy spells I have been having a pressure I have in my head and pain in neck?
Symptoms described by you can be due to Chiara malformation with dysfunction of vestibule cerebellum and its connections.  Please mention detail history including onset, duration, associated symptoms. It will be better if you Consult a neurosurgeon. Hope my advice will help you.  Take care. Don't forget to rate me.