Right now, the deadline for Gulf War veterans to apply for benefits for service-connected illnesses is December 31, 2021, however, VA officials have stated that they are working on an extension.
According to an article published by ConnectingVets.com, “The deadline has continued to be pushed back in recent years. In 2016, the deadline was pushed back to the end of 2021, the fifth time it had been extended. Now, VA officials say they’re working on another extension.” Teri McClelland, a Veterans Benefits Administration official, was quoted in an interview for the publication saying, “The purpose of the deadline was to allow additional time to study the conditions and their causes to better determine a fair and accurate presumptive period for the regulation based on scientific findings while not disadvantaging the claims of any veterans filed in the interim.”
Relevant pages: Veterans Disability