Bruising is a type of injury which is caused by rupturing of blood capillaries under the skin without breaking the epidermis. It is marked by the appearance of a blue-red patch on the skin, which does not fade when touched. Bruises mostly occur on the surface of the skin but in some cases, they can also be internal such as in bones or in muscles. Internal bruises are generally severe and can cause excessive pain and swelling. These bruises need special medical care and attention for quick recovery. On the other hand, topical bruises generally fade away on their own.