Gulf War syndrome

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A medical condition that has been reported in some veterans of the Gulf War, characterized by a multitude of symptoms including chronic fatigue, headache, joint pain, eczema, dyspepsia, neurologic dysfunction, and respiratory disorders, and attributed to exposure to toxic chemicals.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A chronic multisymptom disorder affecting veterans and civilians after the 1991 Gulf War, possibly related to chemical weapons.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a medical condition of uncertain origin that affected many veterans of the 1991 Gulf War; characterized by fatigue and headache and dizziness and nausea and rashes and joint pain and respiratory disorders