Which clotting disorder is stimulated by hypothyroidism?

Which clotting disorder is stimulated by hypothyroidism?

• A. Hemophilia A
• B. Disseminated intravascular coagulation
• C. Coumarin toxicity
• D. von Willebrand disease

Answer: (D)

Hypothyroidism can lead to an acquired von Willebrand syndrome, where levels or function of von Willebrand factor drop. Von Willebrand factor is key for platelet adhesion to damaged blood vessels and also protects factor VIII in circulation. When it’s deficient, platelets don’t stick as well, especially at mucosal surfaces, causing prolonged bleeding tendencies. This link explains why a clotting disorder associated with thyroid deficiency is von Willebrand disease. The other conditions—Hemophilia A (factor VIII deficiency), disseminated intravascular coagulation (a widespread consumptive process), and coumarin toxicity (anticoagulant effect from external medication)—are not specifically triggered by hypothyroidism.

Hypothyroidism can lead to an acquired von Willebrand syndrome, where levels or function of von Willebrand factor drop. Von Willebrand factor is key for platelet adhesion to damaged blood vessels and also protects factor VIII in circulation. When it’s deficient, platelets don’t stick as well, especially at mucosal surfaces, causing prolonged bleeding tendencies. This link explains why a clotting disorder associated with thyroid deficiency is von Willebrand disease. The other conditions—Hemophilia A (factor VIII deficiency), disseminated intravascular coagulation (a widespread consumptive process), and coumarin toxicity (anticoagulant effect from external medication)—are not specifically triggered by hypothyroidism.