Bruises are usually red or purple discolorations right after an injury. This is because they are the color of the blood that has pooled underneath the skin. As a bruise heals, the body breaks down blood and fluids that have accumulated under the skin.

How do you treat a purple bruise?

The following treatments can be done at home:Ice therapy. Apply ice immediately after the injury to reduce blood flow around the area. Heat. You can apply heat to boost circulation and increase blood flow. Compression. Wrap the bruised area in an elastic bandage. Elevation. Arnica. Vitamin K cream. Aloe vera. Vitamin C.More items

Can you get a bruise without hitting anything?

Many things can cause you or your child to have unexplained bruises on your legs. You most likely just bruise more easily than others, and therefore dont remember the injury or bump that caused the bruise. In other cases, bruising can result from a medication, supplement, or underlying health condition.