Hi,

You are correct in saying that anxiety can cause dizziness and since there is a temporal relationship between your excessive worrying and bouts of dizziness, I agree with you that anxiety is the most likely cause of your dizziness. To confirm this, you can assess if you have other common signs of anxiety like palpitations, sweating, breathlessness, numbness, tingling, abdominal discomfort etc, which are not seen in inner ear disease.

While there are safe and effective medicines like SSRIs (sertraline, escitalopram etc) to treat anxiety, relaxation exercises are also beneficial if you do not wish to start medicines. Try taking slow and deep breaths when you become anxious. This will calm you down and prevent dizziness. Progressive muscular relaxation technique is also a good option and you can find detailed instructions on the net. Also try cognitive retraining by consciously identifying the worrisome thoughts and replacing them with healthier thoughts that provide alternate explanations. For example, when you get a thought that says you will do badly in the exams, replace it with a thought saying you are better prepared than many others and are likely to perform better than them.

Hope this helps you. Best wishes.