Chronic itching on a small spot on the arm
My husband has a spot on his forearm that feels like a pin is sticking it and this causes it to feel almost chronically itchy. There's also a spot on the other arm, in almost the same spot, that feels the same way but to a lesser degree I think. This started about a month ago; before that, he had a similar spot on his leg several inches above the knee.
It's driving him crazy! Any idea what this could be?