Sometimes, long after an injury has healed, the body still sends pain signals to the brain. Known as complex regional pain syndrome, the condition can be quite debilitating and is surprisingly difficult to treat. With the new “scrambler therapy” technique, however, pain relief is now...

Sometimes, despite all the best efforts, patients find that ongoing, intensive treatment fails to address lasting pain, even when the source is seemingly known. In such instances, it's sometimes a matter of neuroscience. When suffering from an injury, the brain sends out signals to begin...