Quick definitions from WordNet (Persian gulf illness)
▸ 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
▸ 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