Methods of treating pruritus in a mammal with a P2X3 antagonist are disclosed. Said P2X3 antagonist is preferably a compound of Formula (I). Said pruritus may be associated with an inflammatory skin disorder, an infectious skin disease, an autoimmune skin disease or a pregnancy-related skin disease. The P2X3 antagonist may be administered by intravenous administration, subcutaneous administration, oral administration, inhalation, nasal administration, topical administration or ophthalmic administration and may be used in conjunction with a NK-1 antagonist. The P2X3 antagonist acts by inhibiting pathological ATP release associated with hyperexcitability of afferent pruriceptive neurons, thus dampening peripheral hypersensitivity to itch via broad mechanism independent on the pathological stimuli acting at itch receptors.
TREATMENT OF PRURITUS WITH P2X3 MODULATORS