S-10 Suggestion from the Basic Study and Clinical Research for Developing anti-Pruritic Medicine: Approach for Pharmaceutical Development   S10-1. Neuronal Sensitization to Itch   S10-2. Developmet of Drugs Based on the Mechanisms of Itch   S10-3. Role of Cutaneous Prostaglandin D2 Level in the Itch-Scratch Reaction in Mice   S10-4. Development of External OTC Medicine Using the Model Mice of Xerotic Pruritus   S10-5. Mechanisms of Tacrolimus for the Inhibition of Mouse Scratching Behavior   S10-6. Development of Atopic Dermatitis-Like Scratching Model in Hairless Mice and Analyses of Its Pathophysiologic Mechanisms   S10-7. Recent Findings on the Mechanisms of Allergic Itch