Entitlement to service connection for sinusitis (to include as a result to particulate matter exposure) is granted.

Board reasoning

The Board granted service connection for chronic sinusitis based on a presumed link from Gulf War exposure and a 2001 diagnosis within 10 years of separation, sustaining that current sinusitis is shown and that exposure in Kuwait qualifies for presumptive service connection. For IBS, the Board remanded because the VA examination did not adequately address the veteran's reported bowel disturbances and symptom frequency/severity, indicating a duty to assist was not satisfied and a new examination is required. The decision followed favorable findings on sinusitis and a remand for IBS to obtain an adequate examination and reevaluate ratings consistent with the evidence.