These are blockage of deep veins which does not allow the blood to return back into the heart leading to massive swelling In the limbs.If the blood clots break away, they can fly into the lungs, causing life threatening pulmonary embolism. Hence Deep Venous Thrombosis (DVT) need to be detected early and treatment can be offered to the patients. 

Risk factors

Age : Elderly age group individuals are more prone for DVT.

Smoking: Smoking influences how blood clots, which can increase chances of DVT.

Genetics: Presence of procoagulant factors or absence of anticoagulant factors can trigger DVT.

Pregnancy: Pregnancy builds the strain in the veins in the pelvis and legs due to the foetus. Individuals with an acquired coagulating issue are particularly in danger. Anti-conception medication pills (oral contraceptives) can build the blood’s capacity to clump.

Obesity: Being overweight builds the strain in the veins in the pelvis and legs.

Cancer: Cancer can cause a high degree of blood clots.

Idiopathic: Blood coagulation in a vein can happen with no recognizable factors

Pulmonary embolism (PE): PE is a possibly dangerous complication related with DVT. It happens when blood coagulation (clots) in a leg or other body region breaks free and blocks blood vessels in the lung.

Postphlebitic disorder: Post clots in the veins, the valves can get destroyed leading to leakage within all the veins. Thus when a person keeps the legs down, it leads to leakage, discolouration of the legs, ulcers and even bleeding. 

Treatment plan ranges from therapeutic anticoagulation (blood thinning), removal of the clots by aspiration or thrombolysis, making place in the vein loaded with old clots with angioplasty or placement of stents or even protecting the lungs with placement of IVC filter.