Buchanan v. Nicholson — Lay evidence cannot be rejected solely for lack of contemporaneous medical records

The veteran sought service connection for psychiatric disability and presented lay testimony regarding continuity of symptoms since service. The Board rejected the lay evidence largely because the record lacked contemporaneous medical documentation supporting the reported symptoms during the relevant period.

The Federal Circuit held that the Board committed legal error by treating the absence of contemporaneous medical records as an automatic basis for rejecting lay evidence. The court explained that while the lack of medical documentation may be weighed as one factor affecting credibility, it cannot serve as the sole basis for finding lay evidence not credible.

The court emphasized that competent lay evidence can establish observable symptoms and continuity, particularly where the testimony concerns matters within ordinary personal observation. The decision reinforced that veterans-law adjudication does not require medical corroboration in every circumstance and that lay evidence must receive proper evidentiary consideration.

Buchanan became one of the foundational modern lay-evidence cases in veterans law and is frequently cited in service-connection disputes involving symptom continuity and credibility determinations.

• Lay evidence may not be rejected solely because contemporaneous medical records are absent.
• Competent lay testimony may establish observable symptoms and continuity.
• Absence of medical evidence is a factor for consideration but not an automatic credibility bar.
• The Board must provide adequate reasons and bases when evaluating credibility.

Buchanan protects veterans from having competent lay evidence automatically discounted simply because service or medical records do not fully document the reported symptoms.

Buchanan is one of the most frequently cited Federal Circuit lay-evidence cases. It significantly strengthened the evidentiary value of veteran testimony and reshaped how credibility determinations must be analyzed in VA claims.

• Rejecting lay evidence solely due to lack of contemporaneous records.
• Improperly requiring medical corroboration for observable symptoms.
• Failing to analyze competency versus credibility separately.
• Providing conclusory credibility findings.

A veteran reports chronic knee pain since service, but service treatment records contain minimal documentation. Under Buchanan, VA cannot reject the veteran’s testimony solely because contemporaneous records are incomplete or silent.

Use Buchanan when:
• VA discounts testimony due to missing medical records.
• Challenging credibility determinations based solely on evidentiary silence.
• Arguing continuity of symptoms through lay evidence.
• Supporting service connection where documentation gaps exist.

38 C.F.R. § 3.159(a)(2)