It's about the size of the num-lock light, including the red
skin around it, and when I squeeze it a very very small amount of blood
and clear liquid come out.They are usually close to joints, this one right now right behind the second joint of my index on the side towards my thumb.
It only hurts when there's pressure on it and it never itches, and never comes in groups, just one at a time. I've had this one for about two weeks so far, but don't want to pay to go see a dermatologyst.