Related Clues:

• Result of an insect bite
• Sumac souvenir, perhaps
• Zinc oxide may treat it
• Something to scratch
• Bite consequence, perhaps
• Poison-ivy symptom
• Prickle
• Scratcher's target
• Scratch target
• Wanderlust, e.g.
• Histamine reaction
• Skin infection
• Strong inclination
• Reason to scratch one's head?
• Tingling sensation