Gulf War syndrome

Cluster of illnesses in veterans of the Persian Gulf War (1990–91). These illnesses are characterized by variable and nonspecific symptoms such as fatigue, muscle and joint pains, headaches, memory loss, and posttraumatic stress reactions. It is believed to be caused by exposure to chemicals called anticholinesterases, which are found in nerve toxins, insecticides, and prophylactic anti-nerve toxin drugs. The disorder does not appear to be fatal but can be associated with considerable distress and disability.