The speciality of phlebology has developed to enable physicians sharing an interest in venous disease and health to share knowledge and experience despite being trained in a variety of backgrounds such as dermatology, vascular surgery, haematology, interventional radiology or general medicine. Diagnostic techniques used include the patient's history and physical examination, venous imaging techniques in particular vascular ultrasound and laboratory evaluation related to venous thromboembolism.
A significant part of a phlebology is involved with the treatment of superficial venous disease, frequently of the leg. Conditions often treated include venous stasis ulcers, varicose veins and spider veins (telangiectasia). Other conditions managed by phlebologists include deep venous thrombosis (DVT), superficial thrombophlebitis, and venous malformations.