Chronic Itch: Gastrointestinal Peptides as Possible Contributors
Chronic itch (itch last 6 weeks or longer) is a clinical challenge, and is associated with a number of dermatologic, systemic, neuropathic, and psychogenic causes. Transmission of the itch sensation is similar to that of pain, but distinct in several ways. Scientists have found itch-specific neuronal pathways that when activated, cause considerable discomfort for patients. Current available treatments, however, are still more trial-and-error than evidence-based.