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. It doesn't really hurt, but it feels like I am walking on a ball.
The itchy spots typically don't have any redness or bumps, however yesterday I started seeing light red splotches where it itched and on my arm I was seeing small welts as though I had a mosquito bite, although I know I don't have a bite because I watched my arms as the welts appeared.
Sometimes I take Benadryl and I think it only takes a slight edge of the itching, but not much. I have not changed anything about my diet, no new detergents or soaps or anything. Nothing has changed in this household since this started.