Sclerotherapy is injection of sclerosant material to obliterate the lumen of varicosed veins.It is indicated in the treatment of small telangiectasia and medium sized venulectasia and contraindicated in pregnancy, acute deep venous thrombophlebitis, acute febrile illness and with anticoagulants.This study shed light on minimizing complications of sclerotherapy by proper physical examination, investigations and choosing the proper sclerosants and other new techniques in management of varicose veins.