Any intentional harm or mistreatment to a child under 18 years old is considered child abuse. Child abuse takes many forms, which often occur at the same time.

• Physical abuse. Physical child abuse occurs when a child is purposely physically injured or put at risk of harm by another person.

• Sexual abuse. Child sexual abuse is any sexual activity with a child. This can involve sexual contact, such as intentional sexual touching, oral-genital contact or intercourse. This can also involve noncontact sexual abuse of a child, such as exposing a child to sexual activity or pornography; observing or filming a child in a sexual manner; sexual harassment of a child; or prostitution of a child, including sex trafficking.

• Emotional abuse. Emotional child abuse means injuring a child's self-esteem or emotional well-being. It includes verbal and emotional assault — such as continually belittling or berating a child — as well as isolating, ignoring or rejecting a child.

• Medical abuse. Medical child abuse occurs when someone gives false information about illness in a child that requires medical attention, putting the child at risk of injury and unnecessary medical care.

• Neglect. Child neglect is failure to provide adequate food, clothing, shelter, clean living conditions, affection, supervision, education, or dental or medical care.

In many cases, child abuse is done by someone the child knows and trusts — often a parent or other relative. If you suspect child abuse, report the abuse to the proper authorities.