According to the Mayo Clinic:
“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 purposefully physically injured.
Sexual abuse. Sexual child abuse is any sexual activity with a child, such as fondling, oral genital contact, intercourse, or exposure to child pornography.
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.
Neglect. Child neglect is failure to provide adequate food, shelter, affection, supervision, education, or medical care.
Most child abuse is inflicted 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.”