Gulf War Illness and Southwest Asia Presumptions

Veterans who served in the Southwest Asia theater of operations during the Gulf War era have special presumptions for disabilities related to that service. These presumptions cover undiagnosed illnesses and medically unexplained chronic multisymptom illnesses that appeared during or after service in the region. An undiagnosed illness is a condition that produces symptoms but cannot be attributed to a known clinical diagnosis. Common symptoms include fatigue, joint pain, headaches, sleep disturbances, gastrointestinal problems, and cognitive difficulties. If you have objective indicators of a chronic disability that cannot be attributed to a known diagnosis, you may be eligible for presumptive service connection. Medically unexplained chronic multisymptom illnesses include conditions like chronic fatigue syndrome, fibromyalgia, and functional gastrointestinal disorders. These conditions have recognized diagnoses but their causes are not fully understood. VA recognizes a connection between these conditions and service in the Southwest Asia theater. The qualifying service period and geographic areas have expanded over time and now include service in Iraq, Kuwait, Saudi Arabia, Afghanistan, and other locations. How far the condition must have progressed, and by when, is where the statute and the regulation currently differ — the next two paragraphs set out both. If you served in these regions and have unexplained health problems, file a claim even if your doctors cannot give you a specific diagnosis.

The PACT Act changed the statute these presumptions rest on. Since August 10, 2022, 38 U.S.C. 1117(a)(1) has said VA may pay compensation for a qualifying chronic disability that became manifest to any degree at any time — Congress removed both the old deadline and the old requirement that the illness reach 10 percent before it. The regulation VA adjudicators apply has not yet been amended to match: when this guide was last reviewed, 38 CFR 3.317(a)(1)(i) still required that the disability became manifest during service in the Southwest Asia theater of operations, or to a degree of 10 percent or more not later than December 31, 2026. VA proposed removing that date and that threshold from the regulation in a proposed rule published October 1, 2024 that cites the PACT Act section by name, and no final rule had published when this guide was last reviewed.

For a veteran filing now, the practical points are these. File whenever your symptoms appear — the statute sets no deadline and no minimum degree. If a decision leans on the December 31, 2026 date in 38 CFR 3.317, the citation to point to is 38 U.S.C. 1117(a)(1) as the PACT Act amended it, and VA's own proposed rule describes that amendment as removing both requirements. And if you are in a position to file before December 31, 2026, doing so avoids the question entirely.

Note: This article references sections of the VA's M21-1 Adjudication Procedures Manual. The VA periodically reorganizes the M21-1 and section numbers may have changed since this article was written. For the most current section references, visit the VA's public M21-1 Web Automated Reference Material System (WARMS).