This chapter discusses various aspects of injuries. Classification of wounds/injuries include abrasion, bruise/contusion, lacerated wound, incised wound, chop wounds, stab wound, defense wounds, therapeutic or diagnostic wounds, and fabricated wounds. Abrasions give an idea about the site of impact and direction of force and age of injury can be determined, which helps to corroborate with alleged time of assault. Factors influencing the bruise are type of tissue/site involved, age, sex, color of skin, and natural diseases. The type of laceration may indicate the cause of injury and shape of blunt weapon, such as blunt round end may cause a stellate laceration and long, thin objects, like pipes or sticks produces linear lacerations. Most of the chop wounds are homicidal and usually inflicted on the exposed portions of the body, like head, face, neck, shoulders and extremities. Complications in case of stab wound include hemorrhage, air embolism, infections, asphyxia, and pneumothorax.