Varicose Veins


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Injection Sclerotherapy

An irritant (sclerosant) is injected into the vein aiming to seal that vein.  This treatment is only used after the main superficial veins prove to function normally with no reflux as confirmed by ultrasound, or if they have been treated already.  The concentration used will vary according to the size of the vein treated.  This type of treatment is used for spider veins and surface varicose veins Improvement of symptoms is usually appreciated before cosmetic improvement.  Sclerotherapy sessions could take up to 2 years in some patients.  It is likely that you might develop new veins with time.  Treatment sessions are initially carried out at 3-4 weeks intervals to allow enough time to evaluate the results



  • Pregnancy

  • Lactation

  • Allergy to the sclerosant

  • Abnormal clotting

  • Non-ambulatory status

  • Air travel within 48 hours of treatment



  • Brownish pigmentation occurs in up to 30% of patients.  Spontaneous clearing within 6-12 months is typical.  Pigmentation occasionally persists longer than a year.  Discontinuing oral iron supplements for one week prior to injections may help reduce that complication


  • If the sclerosant leaks outside the vein, skin ulceration may occur


  • Allergic reaction to the sclerosant occurs in about 0.3% of patients


  • “Matting” or “blushing”: these are tiny red veins that appear following treatment in approximately 15% of patients.  The cause is unknown.  It is possibly associated with obesity, longer duration of spider veins and exposure to excess estrogens.  Although matting may be permanent, it usually resolves spontaneously over several months.  Areas of matting may be treated with sclerotherapy or laser


  • Superficial thrombophlebitis is painful tender veins affecting mainly large veins.  Treatment consists of compression, ambulation and anti-inflammatory drugs.  Drainage of a tender clot is sometimes required



  • If a blood clot forms and persists in the injected vein, evacuation might be indicated to relieve the pain
  • Leg ache is common for several hours to days and may be relieved by walking, cold compresses and compression stockings
  • Mild localized redness and swelling is common and resolves with time
  • Post-sclerotherapy:


  • Ambulate immediately
  • Instantly wear compression stockings (duration varies according to the size of the treated veins)
  • Exercise for 30-60 minutes daily (walking, riding bicycles and low-impact aerobics)


  • Heavy lifting, resistance training, vigorous sports, jogging, or extreme heat of saunas and spas for the first few weeks
  • Air travel for at least 48 hours


Injection Sclerotherapy

Ultrasound Guided Sclerotherapy

Ambulatory Phlebectomy


Endo Venous Laser Treatment (EVLT)