complication meaning

noun . acondition in which two or more conditions ex- ist in someone whether or not they are con-nected He was admitted to hospital sufferingfrom pneumonia with complications. . a situ-ation in which someone develops a second condition which changes the course of treat-ment for the first She appeared to be improv-ing but complications set in and she died in a few hours.sickle cell chest syndrome is a common compli- cation of sickle cell disease presenting with chestpain fever and leucocytosis [ British Medical Jour-nal]venous air embolism is a potentially fatal compli- cation of percutaneous venous catheterization Southern Medical Journal]compos mentis compos mentis