Hemophilia A results from a missing or deficient clotting factor VIII, while Hemophilia B results from a missing or deficient clotting factor IX.
Notes on verification
Confirmed by multiple authoritative medical sources including CDC, MedlinePlus, and MSD Manual, consistent with established medical consensus. [tier=gold indep_score=0.983 clusters=3 claim_tier=everyday | kind=empirical eligibility=high]
Sources
- Random Bruising: 13 Possible Causes Excluding Obvious Injury (seed:health_and_medicine)
- https://www.cdc.gov/hemophilia/testing/how-hemophilia-is-inherited.html (corroboration)
- https://www.medlineplus.gov/genetics/condition/hemophilia/ (corroboration)
- https://www.msdmanuals.com/professional/hematology-and-oncology/coagulation-disorders/hemophilia (corroboration)