poremećaj

1. (of health) disorder
   Ima poremećaj sna već nekoliko meseci. — He has had a sleep disorder for several months.
   Poremećaji ishrane su česti kod tinejdžera. — Eating disorders are common among teenagers.
2. (of processes, systems) disruption; disturbance
   Zbog štrajka su mogući poremećaji u saobraćaju. — Traffic disruptions are possible because of the strike.
   Rat je izazvao poremećaj na tržištu nafte. — The war caused a disruption in the oil market.

The affected area or function usually follows with «u» + locative or a genitive: poremećaj u radu, poremećaj sna.