You can do it online through the eBenefits website, by mail, or at a VA regional office. More information on how to file a claim can be found here:http://www.benefits.va.gov/COMPENSATION/apply.asp There is also part of the VA Benefits website that lists claims and compensation by symptom. Here you can find the kind of symptom you have and download the Disability Benefits Questionnaire for that particular symptom. More information on the claims process for veterans here