(1) If there is no documentation available about your condition existing before age 18, DDA may accept an attestation - either verbal or written. The attestation must confirm your condition began before age 18 and may be from someone who knows you or a self-attestation verified by another person who knows you. The information must be specific and reliable, and it cannot substitute for documentation that could be obtained with reasonable diligence.

(2) Additional evidence of your eligible condition and the resulting substantial limitations is still required.