Gulf War Syndrome VA Disability Rating

What is Gulf War syndrome and how does it affect veterans?

Gulf War syndrome — also called Gulf War illness (GWI) or chronic multi-symptom illness — is a cluster of chronic, unexplained symptoms affecting veterans with qualifying Gulf War service from August 2, 1990, onward, including the added statutory locations listed below. It encompasses both undiagnosed illnesses and medically unexplained chronic multi-symptom illnesses (MUCMI) that cannot be fully attributed to a known clinical diagnosis.

Gulf War veterans frequently report a combination of symptoms including chronic fatigue, widespread musculoskeletal pain, cognitive difficulties (“brain fog”), headaches, gastrointestinal problems (diarrhea, bloating, nausea), skin conditions, respiratory issues, and sleep disturbances. Research suggests these symptoms may be related to various environmental exposures during deployment, including pesticides, depleted uranium, oil well fire smoke, nerve agent exposure at Khamisiyah, and vaccines/medications administered during deployment.

Veterans with qualifying service and a qualifying chronic disability do not need to identify a specific toxic exposure or obtain a traditional exposure nexus. Under current 38 U.S.C. § 1117, as amended by the PACT Act, a qualifying chronic disability may manifest during service or at any time afterward; the former December 31, 2026 manifestation deadline and 10% threshold no longer apply. The disability must have existed for at least six months, including intermittent periods of improvement and worsening. The unrevised text of § 3.317 still displays the older gate; current statutory eligibility and VA guidance reflect the PACT Act change.

Qualifying service on or after August 2, 1990 includes the Southwest Asia theater listed in 38 CFR § 3.317(e)(2): Iraq, Kuwait, Saudi Arabia, the neutral zone between Iraq and Saudi Arabia, Bahrain, Qatar, the UAE, Oman, the Gulf of Aden, Gulf of Oman, Persian Gulf, Arabian Sea, Red Sea, and their airspace. Current 38 U.S.C. § 1117 also includes Afghanistan, Egypt, Israel, Jordan, Syria, and Turkey, but not airspace above those six added countries. Djibouti and Uzbekistan are not included for this Gulf War undiagnosed-illness/MUCMI presumption; other exposure presumptions have different locations.

The regulation gives three examples of MUCMI (the list uses “such as,” so it is not exhaustive):

• Chronic fatigue syndrome — persistent, debilitating fatigue not explained by other diagnoses
• Fibromyalgia — widespread musculoskeletal pain with tender points
• Functional gastrointestinal disorders — irritable bowel syndrome (IBS) and other GI conditions without structural explanation

VA diagnostic code for Gulf War syndrome

There is no diagnostic code for “Gulf War syndrome” in the VA rating schedule (38 CFR Part 4). Eligibility comes from 38 CFR § 3.317, and § 3.317(a)(5) says a qualifying chronic disability is rated using the Part 4 criteria for a disease or injury in which the functions affected, anatomical localization, or symptomatology are similar.

How that looks on a rating decision depends on whether you have a diagnosis:

• Diagnosed MUCMI — rated under its own code: chronic fatigue syndrome under DC 6354, fibromyalgia under DC 5025, IBS under DC 7319. Other functional gastrointestinal disorders are rated under DC 7356 (gastrointestinal dysmotility syndrome), whose note says to use it for functional GI illnesses under § 3.317 “other than those which can be evaluated under DC 7319.”
• Undiagnosed illness — rated by analogy. Under 38 CFR § 4.27, when a rating is based on another code’s criteria, the codes are joined with a hyphen so the source of the rating is clear. VA decisions for undiagnosed illness commonly show a built-up code such as 8863-6354 (CFS-like fatigue) or 8863-5025 (fibromyalgia-like pain). The “8863” part is an administrative label for the undiagnosed illness; it is not a diagnostic code with its own criteria in Part 4. The criteria actually applied are those of the code after the hyphen.

Rating criteria for Gulf War syndrome

Because Gulf War illness is rated under the code that best matches your predominant symptoms, the possible ratings depend on that code. Below are the criteria for the codes used most often. If a qualifying disability does not meet the lowest compensable level of the code used, the VA assigns 0% under 38 CFR § 4.31.

Chronic fatigue pattern — DC 6354

DC 6354 rates debilitating fatigue, cognitive impairments (such as inability to concentrate, forgetfulness, or confusion), or a combination of other signs and symptoms:

• 10% ($180.42/month) — Symptoms wax and wane but result in periods of incapacitation of at least one but less than two weeks total duration per year; or symptoms controlled by continuous medication
• 20% ($356.66/month) — Nearly constant and restrict routine daily activities by less than 25 percent of the pre-illness level; or wax and wane, resulting in periods of incapacitation of at least two but less than four weeks total duration per year
• 40% ($795.84/month) — Nearly constant and restrict routine daily activities from 50 to 75 percent of the pre-illness level; or wax and wane, resulting in periods of incapacitation of at least four but less than six weeks total duration per year
• 60% ($1,435.02/month) — Nearly constant and restrict routine daily activities to less than 50 percent of the pre-illness level; or wax and wane, resulting in periods of incapacitation of at least six weeks total duration per year
• 100% ($3,938.58/month) — Nearly constant and so severe as to restrict routine daily activities almost completely and which may occasionally preclude self-care

Note: For DC 6354, incapacitation exists only when a licensed physician prescribes bed rest and treatment.

Fibromyalgia pattern — DC 5025

DC 5025 rates widespread musculoskeletal pain and tender points, with or without associated fatigue, sleep disturbance, stiffness, paresthesias, headache, irritable bowel symptoms, depression, anxiety, or Raynaud’s-like symptoms:

• 10% ($180.42/month) — That require continuous medication for control
• 20% ($356.66/month) — That are episodic, with exacerbations often precipitated by environmental or emotional stress or by overexertion, but that are present more than one-third of the time
• 40% ($795.84/month) — That are constant, or nearly so, and refractory to therapy (the maximum under DC 5025)

Functional GI pattern — DC 7319 (IBS)

DC 7319 rates abdominal pain related to defecation during the previous three months, plus two or more of: change in stool frequency, change in stool form, altered stool passage (straining and/or urgency), mucorrhea, abdominal bloating, or subjective distension:

• 10% ($180.42/month) — Abdominal pain related to defecation at least once during the previous three months, plus two or more of the listed features
• 20% ($356.66/month) — At least three days per month during the previous three months, plus two or more of the listed features
• 30% ($552.47/month) — At least one day per week during the previous three months, plus two or more of the listed features (the maximum under DC 7319)

Other functional GI disorders — DC 7356

For functional GI disorders that DC 7319 does not cover, DC 7356 (gastrointestinal dysmotility syndrome) provides:

• 10% ($180.42/month) — Intermittent abdominal pain with epigastric fullness associated with bloating; and without evidence of a structural gastrointestinal disease
• 30% ($552.47/month) — Symptoms of chronic intestinal pseudo-obstruction or intestinal motility disorder (such as abdominal pain, bloating, epigastric fullness, dyspepsia, nausea and vomiting, regurgitation, constipation, and diarrhea) managed by ambulatory care, and requiring prescribed dietary management or manipulation
• 50% ($1,132.90/month) — Requiring intermittent tube feeding for nutritional support; with recurrent emergency treatment for episodes of intestinal obstruction or regurgitation due to poor gastric emptying, abdominal pain, recurrent nausea, or recurrent vomiting
• 80% ($2,102.15/month) — Requiring complete dependence on total parenteral nutrition (TPN) or continuous tube feeding for nutritional support

Note: The digestive schedule does not allow DCs 7319 and 7356 to be combined with each other; the VA assigns a single evaluation under the code that reflects the predominant disability picture. Symptoms in other body systems (for example, headaches, skin, or respiratory symptoms) may be rated separately under their own analogous codes if they do not overlap. Individual unemployability (TDIU) may also be an option if your Gulf War illness prevents you from maintaining substantially gainful employment.

What evidence do you need?

Gulf War syndrome claims have a unique evidentiary framework under 38 CFR § 3.317, but strong documentation is still essential:

Service records

• DD-214 or deployment records confirming service in a qualifying Gulf War location on or after August 2, 1990
• Orders, travel records, or personnel records showing qualifying dates and locations, including applicable airspace limits for the six added countries listed above
• Service treatment records documenting any symptoms during or shortly after deployment
• Records of any environmental exposure events (oil well fires, depleted uranium, pesticide spraying, etc.)

Medical evidence

• Documentation of chronic symptoms lasting at least six months — under § 3.317(a)(4), disabilities that have existed for 6 months or more, or that show intermittent episodes of improvement and worsening over a 6-month period, are considered chronic
• Evidence of at least six months of chronic disability, including intermittent improvement and worsening; no former 10% manifestation threshold or December 2026 deadline applies.
• Treatment records showing ongoing symptoms and failed treatments
• Records from multiple specialists if symptoms span different body systems (gastroenterology, rheumatology, neurology, pulmonology)
• Lab results and diagnostic testing that rules out other known causes for your symptoms (this actually supports your claim — showing the illness is “undiagnosed” or “medically unexplained” is key to 38 CFR § 3.317)

Nexus letter

Under 38 CFR § 3.317, a traditional nexus letter is not required because the regulation presumes the connection between Southwest Asia service and qualifying chronic disabilities. However, a medical opinion can be helpful in two scenarios:

1. Establishing that your illness is medically unexplained — a doctor’s statement that your symptoms do not conform to a known clinical diagnosis, or that they represent a MUCMI, strengthens your claim
2. Countering a VA denial — if the VA attributes your symptoms to a specific diagnosis and denies the 3.317 claim, an independent medical opinion challenging that attribution can be powerful

Buddy statements

Statements from family members, fellow veterans, or friends who can describe:

• Your health and activity level before your Southwest Asia deployment versus after
• The chronic nature of your symptoms and how they fluctuate
• How your symptoms limit your daily activities and ability to work
• Environmental conditions during your deployment (oil fires, dust storms, burn pits, pesticide use)

Personal statement

Your own detailed account of your symptoms, when they began, and how they affect your daily life. Because Gulf War syndrome involves multiple symptoms across body systems, be thorough. Describe each symptom — when it started, how often it occurs, what makes it worse, and how it limits your functioning. For example, instead of “I have fatigue and stomach problems,” write “I experience crushing fatigue 4-5 days per week where I cannot get out of bed before noon, combined with daily diarrhea and abdominal cramping that forces me to stay near a restroom, which caused me to lose my job as a delivery driver.”

C&P exam tips for Gulf War syndrome

The C&P exam for Gulf War syndrome can be complex because of the multi-symptom nature of the condition. Preparation is critical.

What the examiner evaluates

The examiner will assess:

• Each of your reported symptoms and their severity, frequency, and duration
• Whether your symptoms can be attributed to a known clinical diagnosis
• The impact of symptoms on your occupational and daily functioning
• Duration of the illness (must be chronic — six months or more)
• Objective findings on physical examination and any diagnostic testing
• Whether the condition qualifies as an undiagnosed illness or MUCMI under 38 CFR § 3.317

How to prepare

1. Make a comprehensive symptom list. Gulf War syndrome involves multiple symptoms across body systems. Write down every symptom — fatigue, pain, GI problems, headaches, cognitive issues, skin problems, respiratory symptoms, sleep problems. Bring this list to the exam.
2. Track your symptoms before the exam. Keep a symptom diary for 2-4 weeks before the exam, recording the severity of each symptom daily. This provides concrete evidence of the chronic, fluctuating nature of the illness.
3. Describe your usual symptoms and how they vary. Explain better days and worse periods, how often each occurs, how long they last, and their actual effect on your activities. If fatigue or diarrhea limits you, describe specific examples that are true for you.
4. Explain how symptoms interact. Gulf War illness symptoms often compound each other — fatigue worsens pain, pain disrupts sleep, poor sleep worsens cognitive problems. Help the examiner understand the full picture.
5. Bring documentation of failed treatments. Showing that you have tried multiple medications and therapies without resolution supports the “medically unexplained” aspect of your claim.

Common mistakes

• Focusing on only one symptom when Gulf War syndrome is a multi-symptom illness — make sure every symptom is documented
• Allowing the examiner to attribute your symptoms to a single known diagnosis without pushback (if you believe the symptoms are truly unexplained, make that clear)
• Not describing the waxing and waning nature of symptoms — Gulf War illness fluctuates, and the VA needs to understand the overall disability picture, not just how you feel on exam day
• Failing to explain how symptoms limit employment and daily activities
• Not mentioning cognitive symptoms (“brain fog,” memory problems, difficulty concentrating) which are a hallmark of Gulf War illness but easily overlooked

Common secondary conditions linked to Gulf War syndrome

Gulf War syndrome frequently causes or aggravates other conditions. These can be claimed as secondary service-connected disabilities:

• Depression — The chronic, debilitating nature of Gulf War illness, combined with the frustration of having symptoms that are difficult to diagnose and treat, frequently leads to clinical depression. Studies show significantly higher rates of depression among Gulf War veterans compared to non-deployed veterans.
• Sleep apnea — Sleep disturbances are a core feature of Gulf War illness, and many Gulf War veterans develop obstructive sleep apnea. Chronic fatigue, weight gain from inactivity, and medication side effects all contribute.
• IBS — Functional gastrointestinal disorders, including irritable bowel syndrome, are one of the three examples of MUCMI listed in 38 CFR § 3.317. IBS can also be claimed as a secondary condition if not already rated as part of the Gulf War illness itself.
• Migraines — Chronic headaches and migraines are among the most commonly reported symptoms of Gulf War illness. They can be rated separately if they represent a distinct disability with separate symptoms from the overall Gulf War syndrome rating.

How to calculate your monthly payment

Your total VA disability payment depends on your combined rating across all service-connected conditions, not just Gulf War syndrome alone. Because Gulf War illness often involves multiple ratable symptoms, it is common for Gulf War veterans to have several separate ratings that combine to a higher overall disability percentage. Use our VA disability calculator to:

• Calculate your combined rating with multiple conditions
• See how VA math combines ratings differently than simple addition
• Estimate your monthly payment including dependents

For the full breakdown of payment amounts at every rating level, see our 2026 VA disability pay rates page.

Correction — October 21, 2026: Updated the Gulf War presumptive rules to current law, with no manifestation deadline or 10% threshold and six added countries. Added the six-month chronic disability requirement and updated advice to describe usual symptoms and how they vary.

Disclaimer: This content is for informational purposes only and does not constitute legal or medical advice. For personalized guidance on your VA disability claim, consult a VA-accredited Veterans Service Organization (VSO), attorney, or claims agent. You can find accredited representatives at VA.gov.