NOVEL PHARMACEUTICAL COMPOSITION

摘要

Provided is a novel pharmaceutical composition (antipruritic) that is useful for the prevention and treatment of itching in conditions such as dermal pruritus. More specifically, provided is a pharmaceutical composition (antipruritic) for the treatment of itching having as an active ingredient thereof the naphthalene compound represented by formula (I), a hydrate thereof, or pharmaceutically acceptable salt thereof (in the formula, ring A represents a heterocyclic ring having one of the illustrated structures).