8. How do I establish service connection?

You can establish service connection for a current disability five ways:
(1) directly;
2) by using a presumption;
(3) by showing that it is secondary to a disability that is also service connected;
(4) by showing that a pre-service condition was aggravated during service; and
(5) by showing that you were injured in a VA hospital or while pursuing a course of VA vocational rehabilitation.