<unk> s (from the Greek word κεφάλη, meaning "head") are congenital conditions that stem from damage to, or abnormal development of, the budding nervous system.<unk>  is a term that means "head" or "head end of the body."
Cephalic disorder
Intersexuality
Integration disorder
Loxoscelism
Bibliomania
Physical abuse
Psychological abuse
Bruxism