What can cause the disease deep vein thrombosis (dvt)?

Many factors contrib: Dvt can be multifactorial, but there is usually some combination of factors: dehydration, stasis of the blood in the legs, family associated hereditary disease (thrombophilia), injuries, inactivity, long flights without activity, obesity amongst other predisposing factors. Certain surgical procedures can also predispose a person to DVT as well. Best to speak to your physician if concerned.

Classic: Stasis injury hypercoagulability we add cancer, surgery, obesity, trauma which expand a bit on virchow's triad.

Multiple.: There are many causes for DVT but all causes revolve around 3 factors: stasis of blood, injury to the vessel wall or increased propensity to clot(hypercoagulabe state). Stasis occurs with long trips or immobility due to illness or casts. Injuries to the vein wall can occur with trauma from something within the vein or external to it .Hypercoagulable- increased risk of clotting -genetic/acquired.

Many factors: There are many factor which cause dvts: dehydration, stasis of the blood in the legs, smoking, trauma, family associated hereditary disease (thrombophilia), injuries, inactivity including hospital stays, long flights without activity, obesity. Certain surgical procedures can also predispose a person to DVT as well. I recommend you to speak to your physician if you are concerned.