Hi Mr Sujit,
Thank you for posting your query.
I have noted your symptoms. First of all, I would like to reassure you that they are not suggestive of any serious brain or neurological disease. So, there is no need to worry.
The dizziness and imbalance are most likely due to benign positional vertigo (BPV), which occurs due to minor dysfunction in the ear. This would subside on own in a few days. You may take betahistine tablets for relief of symptoms.
Spondylitis causing low back pain is also common and the treatment advised by your doctor is correct.
There is no correlation between the dizziness and spondylitis.
The swelling of the head has gone, so, there is no need to worry about that.
Dr. Sudhir Kumar MD (Medicine), DM (Neurology)
Senior Consultant Neurologist