When Is a Bruise Serious?
Here's how to tell when a bruise requires medical attention:
If the pain is out of proportion to what you might expect from the injury.
If the bruise is larger than what you'd expect from the injury.
If the pain worsens; the pain should lessen with time.
If you don't know how you got the bruise and it is large or painful, or if you don't usually bruise and suddenly you have bruises, call your health care provider.