it involves more emotional reactivity to pain, interpreting the same sensation as more unpleasant. So stress-induced hyperalgesia is just in your head. On the other hand, so is stress-induced analgesia, just a different part of your head. The pain-ometer parts of your brain respond to pain normally in people with stress-induced hyperalgesia. It’s the more emotional parts of the brain that are hyperreactive, the parts of the brain that are the core of our anxieties and fears.
