As a ENT surgeon I can tell u must have middle ear pathology which is causing dizziness and tinitus both. Did in past u had any history of pustular ear discharge.or any hearing deficit. Another cause is : Spondylitis which can cause dizziness associated with stiff neck.

Based on history it feels you have meniere's disease. How long does your dizziness occur? Are there multiple episodes of dizziness in one day? Do you feel nausea at the time of dizziness? Is there any hearing loss in any ear? Do you have feelings of fullness in ear(like we feel in aeroplane)? Need detail history to evaluate and give medication accordingly.