Telangiectasia (Thread Veins) - Symptoms, Causes & Treatment
Medically reviewed by Dr. Anand S. Urhekar, MD, MD Pathology, Clinical Advisor · Last updated July 2026
Permanently dilated small blood vessels visible through the skin as fine red or purple lines, threads or web-like clusters. They are most common on the cheeks, nose and legs, and are associated with sun damage, rosacea, ageing, pregnancy, topical steroid use and, less often, inherited or connective tissue disorders.
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Quick Answer
Telangiectasia, or thread veins, are permanently widened small blood vessels seen as fine red or purple lines on the cheeks, nose or legs. Common causes are sun damage, rosacea, ageing, pregnancy and prolonged topical steroid use. They are harmless but permanent; vascular laser or intense pulsed light clears facial vessels effectively, and sclerotherapy works well on the legs.
Symptoms
- Fine red, blue or purple lines or web-like clusters
- Blanch briefly when pressed then refill
- Most often on cheeks, nose, chin and lower legs
- Painless, though leg veins may ache
- Gradually increase in number with age and sun exposure
Causes & Risk Factors
- Chronic sun exposure and photoageing
- Rosacea
- Prolonged use of potent topical corticosteroids on the face
- Pregnancy and hormonal change
- Venous hypertension in the legs; rarely hereditary haemorrhagic telangiectasia or scleroderma
Treatment & Management
- Vascular laser (pulsed dye, KTP, Nd:YAG) for facial vessels
- Intense pulsed light
- Sclerotherapy for leg thread veins
- Treating underlying rosacea and stopping facial steroid use
- Daily broad-spectrum sun protection
When to See a Doctor
See a doctor if thread veins appear suddenly in large numbers, are associated with nosebleeds, or accompany tight or thickened finger skin — these may point to hereditary haemorrhagic telangiectasia or scleroderma.
Frequently Asked Questions
Do thread veins go away on their own?
Rarely. Pregnancy-related vessels sometimes fade postpartum, but most facial and leg telangiectasia are permanent and need laser or sclerotherapy for clearance.
Will they come back after laser?
Treated vessels are destroyed permanently, but the underlying tendency remains, so new vessels appear over years. Sun protection and rosacea control extend the results.
Related Conditions
Medical References
Information on this page is sourced from and verified against reputable medical resources:
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Medical Disclaimer: This information is for educational purposes only and is not intended as medical advice. The content on this page should not be used to diagnose or treat any health problem. Always consult with a qualified healthcare professional for proper medical evaluation, diagnosis, and treatment of your condition.