When is sclerotherapy recommended for varicose veins?

A clinician assesses the visible veins, skin, circulation and any swelling, aching, itching or heaviness. The injected solution irritates the inside of a small vein, allowing the body to close and gradually clear it. Larger veins, reflux in deeper veins, previous clots, pregnancy and some medicines can affect the choice. An ultrasound may be needed before treatment when the vein pattern or circulation is unclear.

Describe when symptoms appear, whether one leg is affected, and any history of clots, ulcers or vein procedures. Bring a list of medicines and mention pregnancy or breastfeeding. Do not assume that every prominent vein needs treatment; the plan may involve observation, movement, compression advice or another procedure. Read about [Sclerotherapy](/treatments/injectables/sclerotherapy/) and [Varicose Veins](/conditions/varicose-veins/) to prepare specific questions.

Seek urgent medical advice for sudden one-sided leg swelling, marked warmth, new severe pain, chest pain, sudden breathlessness or coughing blood. These symptoms need assessment for problems that are not managed as a routine cosmetic vein appointment. A painful skin ulcer, spreading redness or bleeding from a vein also warrants prompt clinical review.

Ask whether the target vein is suitable for injection, whether an ultrasound is needed, what other options fit your circulation, and which symptoms should make you contact the clinic after treatment.