Treatment of chronic pain via direct photobiomodulation of a nerve

A system comprising:

• an implantable emitter configured to be implanted in proximity to at least one sensory and/or sensorimotor nerve of a patient to deliver at least one dose of photobiomodulation (PBM) directly to the at least one sensory and/or sensorimotor nerve at an emitter power to inhibit conduction in at least one small diameter nerve fiber within the at least one sensory and/or sensorimotor nerve without affecting conduction of at least one larger diameter nerve fiber within the at least one sensory and/or sensorimotor nerve;
• an external energy source located external to the emitter and temporarily coupled to the emitter for at most a time to drive delivery of the at least one dose of PBM from the emitter directly to the at least one sensory and/or sensorimotor nerve;
• an external controller coupled to the emitter through the energy source for at most the time and configured to set at least one parameter for the at least one dose of PBM,
• wherein application of the at least one dose of PBM for the time selectively inhibits at least a portion of conduction of at least one sensory signal by the at least one small diameter nerve fiber for another time, wherein the other time is at least a day longer than the time.