Severe headache after first round of Botox for migraine...What can I do for relief?
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Doctor Answers 1
Severe Headache after Botox Injection
You are probably free from headaches by now. Usually, it takes a few days after botox injection for it to work and for you to feel relief. On some cases, the symptoms may actually get worse on the first few days.
Should the pain persist for more than 2 weeks however, you should call for a neurologic revisit.