ABSTRACT
Itch is a somatosensory percept that is triggered by irritants at the skin’s surface. However, the manner in which itch is coded in the nervous system remains almost completely unknown. Recent work has uncovered a key role of spinal interneurons in the modulation of itch. Here we discuss these recent discoveries in the context of our understanding of spinal microcircuitry, highlighting the possible roles of the dorsal horn in the processing of pruritic input.
