ScienceModernglobalhigh confidence

Von Willebrand disease is a lifelong genetic bleeding disorder that people are born with, though symptoms may not appear until later in life.

Notes on verification

Confirmed by CDC, Mayo Clinic, Cleveland Clinic, and Hemophilia Federation of America; consistent across multiple authoritative medical sources. [tier=gold indep_score=0.963 clusters=4 claim_tier=everyday | kind=empirical eligibility=high]

Sources