Medically reviewed by Dr. Tom Biernacki, DPM
Board-certified podiatric surgeon | Balance Foot & Ankle, Howell & Bloomfield Township, MI
Last reviewed: May 2026
Erythromelalgia causes episodes of intense burning, redness, and heat in the feet that are triggered by warmth and relieved by cold — and the underlying cause (primary vs. secondary to a myeloproliferative disorder) determines whether treatment with aspirin will be curative or merely palliative. Call (810) 206-1402 — expert podiatric care across Michigan.
Erythromelalgia is a rare vascular disorder causing episodic burning pain, warmth, and erythema (redness) of the extremities — predominantly the feet. Episodes are triggered by heat, exercise, or prolonged standing and relieved by cooling. It affects both primary (idiopathic or inherited SCN9A mutation) and secondary forms (associated with polycythemia vera, myeloproliferative disorders, or medications). Podiatrists encounter erythromelalgia in patients presenting with burning foot pain that is paradoxically worse with warmth and socks.
Primary vs. Secondary Erythromelalgia
| Feature | Primary Erythromelalgia | Secondary Erythromelalgia |
|---|---|---|
| Cause | Idiopathic or SCN9A (Nav1.7 sodium channel) gain-of-function mutation | Polycythemia vera; essential thrombocythemia; small fiber neuropathy; medications (verapamil, nifedipine, bromocriptine) |
| Age of onset | Often childhood or young adult; familial cases in first decade | Middle-aged to elderly; concurrent hematologic disease |
| Severity | Often more severe; disabling in some; drug-resistant | May resolve with treatment of underlying condition |
| CBC/bone marrow | Normal | Elevated RBC, platelets, or WBC; bone marrow findings |
| Aspirin response | Generally does not respond | Often responds dramatically to aspirin (especially polycythemia vera-related) |
Treatment Options and Evidence
| Treatment | Mechanism | Evidence | Notes |
|---|---|---|---|
| Cooling (immediate relief) | Vasoconstriction reduces skin temperature and pain | High for symptom relief | Avoid ice-water immersion — frostbite risk; use fans and elevation |
| Aspirin 81-325 mg daily | Antiplatelet; most effective in secondary/polycythemia vera form | High for polycythemia vera-associated | Trial warranted before hematology workup result in suspected secondary |
| Sodium channel blockers (mexiletine, lidocaine) | Block Nav1.7 sodium channel overactivity in SCN9A-mutant primary form | Moderate; especially for SCN9A mutation carriers | Requires neurology or pain specialist prescribing |
| SSRIs/SNRIs (venlafaxine, sertraline) | Serotonin modulation of peripheral pain pathways | Moderate case series | Useful when concurrent small fiber neuropathy |
| Treat underlying condition | Polycythemia vera treatment (hydroxyurea, phlebotomy) resolves secondary form | High for secondary | Hematology referral essential for suspected secondary |
At Balance Foot & Ankle in Howell and Bloomfield Township, erythromelalgia is recognized by its characteristic heat-triggered bilateral burning foot pain and prompt referral for CBC and hematology workup to rule out secondary causes. Call (810) 206-1402.
PubMed: Erythromelalgia of the Foot
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Doctor Answer
What is erythromelalgia of the feet and how is it managed?
Erythromelalgia is a rare condition causing episodes of intense burning pain, redness, and warmth in the feet — typically triggered by heat or exercise. It can be primary or secondary to conditions like polycythemia vera or small fiber neuropathy. Cooling the feet, elevating the legs, and avoiding heat triggers help during flares. Medical treatment includes aspirin for myeloproliferative forms and channel blockers for primary cases.
Dr. Tom Biernacki, DPM is a board-certified foot & ankle surgeon (ABFAS & ABPM) at Balance Foot & Ankle Specialists in Southeast Michigan. With over a decade of clinical experience, he specializes in heel pain, bunions, diabetic foot care, sports injuries, and minimally invasive surgery. Dr. Biernacki is a member of the APMA and ACFAS, and his patient education content on MichiganFootDoctors.com and YouTube has made him one of the most-followed foot & ankle educators on YouTube.