I have gotten this before but it has not bothered me enough to question it before. Sometimes I scratch an area of my skin and it feels bruised underneath the skin. Don't know why but it usually goes away pretty soon, the same day even.
As always, if it bothers you too much, go see a physician.
Moderator Chronic Pain
Believe in yourself. Be kind to fellow humans and animals. Take time to smell the flowers and the coffee.
And by all means, when you are down, ask me for help. I will be there.