Child abuse can include physical, emotional, sexual abuse or neglect that harms a child's health or welfare. It is defined as any non-accidental injury or maltreatment of a child under 18 by a caretaker. Common types of child abuse include physical abuse, sexual abuse, emotional abuse, and neglect. Physical signs of abuse may include bruises in various stages of healing, hand marks, burns, fractures, and other injuries. Preventing and intervening in child abuse requires a multi-level approach through laws, child protective services, and community organizations working to protect children's rights and welfare.