General or local disorder of skin sensitivity, expressed in an irresistible need to itch. Itching all over the body. A strong, irresistible urge or desire. Feel the literary itch. day three . the spot has grown, hardened, and itches more and more. I carefully treat it with chlorhexidine, check it every 10, 5, 2 minutes, it starts to feel nauseous. the spot turns blue. day two . A red swelling appears on the right knee. day one . knees are scraped, scratches, bruises. day zero . night.