Vertigo is caused by an error in the sensory pathway of the ear or brain. It can develop as a reaction to many medications, or it can be due to an illness, tumor or virus. Vertigo is linked to over sixty psychiatric and medical conditions. A doctor should be able to determine the cause of vertigo as it is different for everyone. Some patients will experience idiopathic versions of vertigo, meaning there is no particular cause or origin of the dizziness.