Why do we feel pain? A neurologist's view

What should you do if you are in pain? The doctor can give you medicine, which might help. But there is so much more to it than that. Patients come looking for simple answers, but often there is not just one cause. I ask consultant neurologist Dr Steve Allder to help untangle the complexity of what it means to be in pain. 

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Dr Allder works at the Harley Street clinic Re:Cognition Health and specialises in traumatic brain injury, as well as unexplained neurological conditions.