Gulf War syndromeThe Gulf War syndrome (GWS) is a chronic and multi-symptomatic disorder affecting military veterans of both sides of the Gulf War (1990–1991). A wide range of acute and chronic symptoms have been linked to it, including fatigue, muscle pain, cognitive problems, insomnia, rashes and diarrhea. Approximately 250,000 of the 697,000 U.S. veterans who served in the Gulf War have enduring chronic multi-symptom illness, a condition with serious consequences.