I'm 32 years old, always healthy and never have health problems. 4 days ago I woke up and my palms itched. They itched off and on (more on) throughout the day, and eventually my feet and knees started itching too. The next day my arms, elbows, legs, hairline around my neck, neck, ears, inside my ears, stomach and chest started to itch too. Today is the fourth day of the itching, but now I have a big lump on the bottom of my foot.