It is no surprise that there are different levels of injury, and with the focus on severe injury classifications, there are both non-life-threatening and life-threatening severe injuries. They often involve the loss of a limb, or significant organ trauma that results in loss of use, or crucial limitation. Causes of severe injuries can range widely, but most often occur due to automobile accidents or comparable physical trauma. It is also advised to look out for tingling in limbs, blurred vision or loss of vision, wound size, and penetrated wounds, as these can all indicate a severe injury.