injurious

/in-ˈju̇r-ē-əs/

adjective

  1. inflicting or tending to inflict injury : detrimental

  2. abusive, defamatory

injurious to health

noun

  1. injury to one's own body; especially : the act of purposely hurting oneself (as by cutting or burning the skin) as an emotional coping mechanism : self-harm

The dog's excessive licking led to self-injury.