The Board denied the Veteran's claim for service connection for fatigue, including chronic fatigue syndrome, as due to an undiagnosed illness or exposure to environmental hazards. The Board found that there was no objective evidence of a qualifying chronic disability manifested by fatigue and concluded that service connection under the presumptive provisions is not warranted.
The deciding factor: The Veteran did not meet the criteria for chronic fatigue syndrome (CFS) as defined by VA guidelines, and his symptoms were attributed to other diagnosed medical conditions such as sleep apnea, insomnia, depression, GERD, IBS-D, and abnormal thyroid function tests indicating a likelihood of hypothyroidism.
- Claimed conditions
- fatigue, chronic fatigue syndrome (CFS), undiagnosed illness, medically unexplained chronic multi-symptom illness (MUCMI)
- How they argued it
- Not specified
- Exposure basis
- None
- Rating assigned
- None in this decision
- Decision date
- January 7, 2026
- Citation
- 26000198
This is a plain-language summary generated by AI from a public Board of Veterans’ Appeals decision. It can contain errors — always verify against the original. Look up the original decision on VA.gov (opens in a new tab) using citation 26000198.
What this means for you
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What you can do next
Related decisions
Other Board decisions on a similar condition or argued the same way.
- Remanded (sent back)
The Board has determined that the AOJ did not obtain all necessary opinions regarding whether the Veteran's symptoms are related to an undiagnosed illness or medically unexplained chronic multisymptom illness (MUCMI). The claims for service connection for fatigue, fibromyalgia, left elbow disorder, right elbow disorder, and sleep disorder are remanded for further development.
- Denied
The Board has denied service connection for chronic rhinitis, chronic sinusitis, and chronic fatigue syndrome as there is no evidence of a current disability in the record.
- Dismissed
The Veteran withdrew his appeals for all issues related to sleep wake disorder, CFS, and service-connected back scars.
- Dismissed
The Veteran withdrew her appeals for the service connection of multiple conditions, including low back disability, bilateral foot disability, cervical spine disability, migraines, right hand and shoulder disabilities, right wrist disability, asthma (claimed as Gulf War Syndrome), chronic fatigue syndrome, dysmenorrhea, irritable bowel syndrome, and sleep disability. As a result, these claims are dismissed.
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