grocer's itch

noun
gro·​cer's itch | \ ˈgrō-sərz- How to pronounce grocer's itch (audio) \

Medical Definition of grocer's itch

: an itching dermatitis that results from prolonged contact with some mites especially of the family Acaridae, their products, or materials (as feeds) infested with them

called also baker's itch

— compare grain itch