There is no diagnostic work up required as the history of TN is typical and doctor can diagnose it well. Now MRI brain can ruleout the secondary causes of TN if any.
The treatment of TN is mostly medical, drugs like carbamazepine, the patient will be improving mostly with medical therapy.
MVD is one type of treatment for a type of TN where a vessel compresses nerve when the nerve leaves the brain stem.
The treatment differs based on the original caus eof it, if it is idiopathic [no specific cause found] or secondary.
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