Several fields refer to complications: , Complication - an infrequent and unfavorable evolution of a disease, a health condition or a medical treatment , Complication - a special feature in a mechanical clock that causes the design of the movement to become more complicated , "Complication", the seventh track off of the second disc of the double album release The Fragile by industrial rock act Nine Inch Nails. fr:Complication nl:Complicatie...