Hi, I'm a 16 year old girl. Good health, clean and fit. Recently my hands/palms have been itching. Today, I was playing outside with my brothers when they started itching again, beyond closer look, I noticed what they looked like. There on like, the pads of my hands and they look like underskin blisters, I mean there bumpy but not very but they look like blisters or clear black heads, but cannot be popped. If I itch them they start to burn and turn red. What is it?