This is very complicated and affected in your health, Chronic Pain and that is very long term diseases on your body health, I think this pain is create on body in your setting in long term.

“The idea was to have a single injection that could produce a nerve block lasting days, weeks, maybe even months,” study senior author Dr. Daniel Kohane, of the division of critical care medicine in the department of anesthesiology, said in a Children’s Hospital Boston news release. “It would be useful for conditions like chronic pain where, rather than use narcotics, which are systemic and pose a risk of addiction, you could just put that piece of the body to sleep, so to speak.”

“It is conceivable we could have a formulation that is suitable for clinical trials [for humans] before too long,” Kohane said.

“If these long-acting, low-toxicity formulations of local anesthetics are shown to be effective in humans, they could have a major impact on the treatment of acute and chronic pain. This slow-release technology may also have broader applications in drug delivery for the treatment of a variety of diseases,” said Alison Cole.