Migraine result from a combination of blood vessel enlargement and the release of chemicals from nerves that causes the sympathetic nervous system to respond with feelings of nausea, diarrhea, and vomiting. The drug works by temporarily blocking nerve signals that release such chemicals that cause inflammation and pain. "Though chronic migraine cannot be cured permanently, OnaBotulinum toxin typeA can significantly decrease the severity and frequency of migraine attacks," said Dr Kumar.
The nerve points from where the headache originates is identified and shots are given at these sites on the scalp. The needles used for these shots are thin and the prick is not painful. Generally 150 units of botox are injected during one sitting to provide relief for at least six months. It costs about Rs20,000.
Dr Vikash Agarwal, consultant neurologist at Apollo Hospitals said botox is being used in treatment of other neurological problems like dystonia. "Though it provides relief to chronic migraine patients, botox should never be the first leg of treatment. It is not a cure, but an option for interim relief. It should be prescribed only when conventional methods of treatment fail. Excess amounts of botox could cause weakness of facial muscles," he said.
http://timesofindia.indiatimes.com/city/chennai/Now-women-take-botox-shots-not-for-beauty-but-relief-from-headache/articleshow/35578477.cms
