What other autoimmune diseases, besides antiphospholipid syndrome, cause deep vein thrombosis & increased coagulation of blood?

Lupus: Systemic lupus erythematosus is a rather common one that results in thrombophilia. Other tests that we typically order to test for a propensity to clotting include: protein c, protein s deficiencies, Antithrombin iii deficiency, factor v leiden mutation, prothrombin gene g20210 mutation, in addition to lupus anticoagulant and antiphospholipid antibodies. Consult your physician.

Also: Wegener's and behcet's have an increased risk of thrombosis as well.