The objective of this three year-long retrospective study was to elucidate possible causes of postoperative relapses of varicose disease and consider methods of its prevention. Medical documentation (medical histories, protocols of examination and surgery, results of ultrasound studies and duplex imaging) concerning 67 patients was available for analysis. They were operated for the management of recurrent varicosis between January 2007 and September 2009 in the City Centre of Vascular Surgery, Minsk. Mean duration of the postoperative period preceding the development of relapses was 81.8 months. Most of them were due to compromised sapheno-femoral junction (n=14 or 20.9% ), residual stump of the great saphenous vein with signs of neovascularization (n=3 or 4.5%), compromised sapheno-popliteal junction (n=6 or 8.9%), perforating vein insufficiency (n=23 or 34.3%), deep venous reflux (n=7 or 10.4). It is concluded that varicose disease may reccur due to several causes, such as its progression, inadequate preoperative diagnosis or primary surgery, disturbed venous hemodynamics, and neovascularization. The study failed to reveal a downward tend in the recurrence rate of varicose disease following surgical treatment.