An injury is damage or harm caused to the structure or function of the body caused by an outside agent or force. Different types of injuries include the following:
Amputation: the removal of a body extremity by trauma or surgery.
Bruise: a hemorrhage under the skin caused by contusion.
Burns: caused by excess heat, chemical exposure, or sometimes cold (frostbite).
Concussion: a mild traumatic brain injury caused by a blow, without any penetration into the skull or brain.
Fractures: injuries to bones.
Joint dislocation: the displacement of a bone from its normal joint.
Shock: a serious medical condition where the tissues cannot obtain sufficient oxygen and nutrients.
Sprain: a sudden overstretching that causes a tear in the ligaments and the muscles.
Wound: cuts and grazes to or through the skin that cause bleeding.