Why do you have erythromelalgia instead of Raynaud's phenomenon with lupus?
Erythromelalgia and Raynaud's phenomenon are actually opposite conditions in how they affect blood flow. While Raynaud's involves blood vessels temporarily constricting and reducing blood flow (causing cold, pale fingers and toes), erythromelalgia Show Full Answer
Why do you have erythromelalgia instead of Raynaud's phenomenon with lupus?
Erythromelalgia and Raynaud's phenomenon are actually opposite conditions in how they affect blood flow. While Raynaud's involves blood vessels temporarily constricting and reducing blood flow (causing cold, pale fingers and toes), erythromelalgia involves blood vessels dilating too much, causing excessive blood flow that leads to burning pain, redness, and heat in the affected areas.
Some people with lupus develop one condition, some develop the other, and rarely, some can experience both at different times. The specific condition you develop depends on how lupus-related inflammation affects your blood vessels and nervous system.
Both conditions stem from lupus causing vasculitis (inflammation in blood vessels) or nerve inflammation, but they manifest differently. Your immune system's attack on blood vessels may be triggering the dilation response rather than the constriction seen in Raynaud's.
If you're experiencing burning, red, hot extremities rather than cold, pale ones, it's important to discuss this with your rheumatologist. They can help manage your symptoms and determine if your treatment plan needs adjustment to address the blood vessel inflammation causing your erythromelalgia.
October 26, 2025
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