Reviewed by Dr. Amir Issa, MD, DABVLM, RPhS · CURA Vein Doctors · September 2026
A purplish, lace-like pattern spreading across the skin looks alarming, and searching for photos of it usually makes things feel worse, not better, since the pattern varies so much from person to person. Here’s what livedo reticularis actually is, and when it’s genuinely worth worrying about.
What Is Livedo Reticularis?
Livedo reticularis is a lace-like, net-shaped purplish or bluish discoloration of the skin, caused by irregular blood flow through the small vessels just beneath the surface. It most often appears on the legs, tends to worsen in cold temperatures, and frequently fades once the skin warms back up. Most cases are harmless.
How Serious Is Livedo Reticularis?
In most cases, not very. The common form, triggered by cold or present since childhood, is a normal variation with no health risk. It becomes more serious when the pattern is broken and irregular rather than complete rings, called livedo racemosa, which is linked to autoimmune disease or clotting disorders in legs and needs a full medical workup.
Livedo Reticularis vs Livedo Racemosa: What’s the Difference?
| Feature | Livedo Reticularis | Livedo Racemosa |
|---|---|---|
| Pattern | Complete, unbroken rings | Broken, irregular rings |
| Fades with warming | Usually yes | Often no |
| Typical cause | Cold exposure, benign vasospasm | Autoimmune disease, clotting disorders, vasculitis |
| Health significance | Usually harmless | Warrants full medical workup |
What Autoimmune Conditions Cause Livedo Reticularis?
| Condition | Connection |
|---|---|
| Systemic lupus erythematosus (SLE) | A well-documented trigger, especially with the livedo racemosa pattern |
| Antiphospholipid syndrome (APS) | Clotting antibodies disrupt blood flow through small vessels |
| Sneddon syndrome | A rare condition combining livedo racemosa with stroke risk, sometimes linked to APS |
| Polyarteritis nodosa | A form of vasculitis affecting medium-sized arteries |
| Cryoglobulinemia | Abnormal proteins that thicken blood in cold temperatures |
What Medicine Is Used to Treat Livedo Reticularis?
There’s no medication that treats livedo reticularis directly, treatment targets whatever is causing it. Amantadine, a drug used for Parkinson’s disease and some viral infections, is a well-documented cause, and symptoms typically resolve within days of stopping it. When an autoimmune condition like lupus or antiphospholipid syndrome is behind it, corticosteroids, immunosuppressants, or blood thinners may be prescribed to treat that underlying condition instead.
What Vitamin Deficiency Causes Livedo Reticularis?
None have been reliably established as a cause. In documented case studies, doctors have specifically tested vitamin A, D, B12, E, and K levels in patients with livedo reticularis and found them normal, ruling deficiency out rather than confirming it as a trigger. If you’re researching this connection, it’s more likely to come up as one of several tests a doctor runs to rule out causes, not as a common explanation.
Is Livedo Reticularis a Vein Disorder?
Not typically. It involves small vessels near the skin’s surface rather than the larger veins responsible for varicose veins or chronic venous insufficiency. That said, the two can occur together, and if you also notice heaviness, aching, or visible varicose veins, it’s worth a vein evaluation. For a broader look at mottled skin patterns and their connection to leg vein health, see our guide on what causes mottled skin on the legs.
When Should You See a Doctor of Veins About Livedo Reticularis?
See a doctor of veins, or a broader medical evaluation for unexplained pain, if the pattern doesn’t fade with warming, becomes painful, spreads rapidly, or comes with ulcers, numbness, or fingers and toes turning pale or blue. These signs point toward livedo racemosa rather than the common, benign form.
Frequently Asked Questions
How serious is livedo reticularis?
Usually not serious at all in its common form. It becomes a concern when the pattern is broken and irregular, called livedo racemosa, which needs a full medical workup.
What autoimmune conditions cause livedo reticularis?
Lupus, antiphospholipid syndrome, Sneddon syndrome, polyarteritis nodosa, and cryoglobulinemia are the main autoimmune and vascular conditions linked to it.
What medicine is used to treat livedo reticularis?
None treats it directly, treatment addresses the cause, whether that’s stopping a triggering drug like amantadine or managing an underlying autoimmune condition.
What vitamin deficiency causes livedo reticularis?
None have been reliably confirmed as a cause. Vitamin levels are sometimes tested to rule out other explanations, not because deficiency is a known trigger.
A skin pattern that doesn’t fade or comes with other symptoms deserves a real evaluation, not a photo comparison. Call CURA Vein Doctors at +1 973-363-2029 or use the contact page to get it checked.
References
- Starmans NLP, van Dijk MR, Kappelle LJ, Frijns CJM. Sneddon Syndrome: A Comprehensive Clinical Review of 53 Patients. Journal of Neurology. ncbi.nlm.nih.gov/pmc/articles/PMC8217002
- Amantadine-Induced Livedo Reticularis, Case Report. National Library of Medicine. pmc.ncbi.nlm.nih.gov/articles/PMC4631243
