What is this on my arm? The skin around is rough, and it's the fifth time I've had to pop it. I have keratosis on my arms but have seen nothing like this before

What is this on my arm? The skin around is rough, and it's the fifth time I've had to pop it. I have keratosis on my arms but have seen nothing like this before
Posted: 3mth ago Viewed: 100 times Liked: 0 times

More photos