Medication Summary
Platelet inhibition is helpful in patients with thrombocytosis. Aspirin is most often used, but anagrelide may also be effective.[27] The optimal pharmacologic therapy in primary erythromelalgia is still unknown.
Nonsteroidal Anti-inflammatory Drugs (NSAIDs)
Class Summary
Aspirin is preferred because it provides relief lasting longer than that of indomethacin or other nonsteroidal anti-inflammatory drugs (NSAIDs), presumably because of irreversible platelet inhibition.
Aspirin
Aspirin inhibits prostaglandin synthesis, which prevents formation of platelet-aggregating thromboxane A2.
Anagrelide (Agrylin)
Anagrelide may inhibit cyclic nucleotide phosphodiesterase and the release of arachidonic acid from phospholipase possibly by inhibiting phospholipase A2. A decrease in megakaryocyte hypermaturation may result in a reduction in platelet production.
Drenth JP, van Genderen PJ, Michiels JJ. Thrombocythemic erythromelalgia, primary erythermalgia, and secondary erythermalgia: three distinct clinicopathologic entities. Angiology. Jun 1994;45(6):451-3. [Medline].
Michiels JJ, Drenth JP, Van Genderen PJ. Classification and diagnosis of erythromelalgia and erythermalgia. Int J Dermatol. Feb 1995;34(2):97-100. [Medline].
Michiels JJ, Abels J, Steketee J, et al. Erythromelalgia caused by platelet-mediated arteriolar inflammation and thrombosis in thrombocythemia. Ann Intern Med. Apr 1985;102(4):466-71. [Medline].
Orstavik K, Weidner C, Schmidt R, et al. Pathological C-fibres in patients with a chronic painful condition. Brain. Mar 2003;126(Pt 3):567-78. [Medline].
Charkoudian N. Skin blood flow in adult human thermoregulation: how it works, when it does not, and why. Mayo Clin Proc. May 2003;78(5):603-12. [Medline].
Mork C, Kalgaard OM, Kvernebo K. Impaired neurogenic control of skin perfusion in erythromelalgia. J Invest Dermatol. Apr 2002;118(4):699-703. [Medline].
Waxman SG, Dib-Hajj SD. Erythromelalgia: a hereditary pain syndrome enters the molecular era. Ann Neurol. Jun 2005;57(6):785-8.
Drenth JP, te Morsche RH, Guillet G, et al. SCN9A mutations define primary erythermalgia as a neuropathic disorder of voltage gated sodium channels. J Invest Dermatol. Jun 2005;124(6):1333-8.
Michiels JJ, te Morsche RH, Jansen JB, Drenth JP. Autosomal dominant erythermalgia associated with a novel mutation in the voltage-gated sodium channel alpha subunit Nav1.7. Arch Neurol. Oct 2005;62(10):1587-90.
Nassar MA, Stirling LC, Forlani G. Nociceptor-specific gene deletion reveals a major role for Nav1.7 (PN1) in acute and inflammatory pain. Proc Natl Acad Sci U S A. Aug 24 2004;101(34):12706-11.
Yang Y, Wang Y, Li S, et al. Mutations in SCN9A, encoding a sodium channel alpha subunit, in patients with primary erythermalgia. J Med Genet. Mar 2004;41(3):171-4. [Medline]. [Full Text].
Han C, Dib-Hajj SD, Lin Z, Li Y, et al. Early- and late-onset inherited erythromelalgia: genotype-phenotype correlation. Brain. Jul 2009;132:1711-22. [Medline].
Davis MD, O'Fallon WM, Rogers RS 3rd, Rooke TW. Natural history of erythromelalgia: presentation and outcome in 168 patients. Arch Dermatol. Mar 2000;136(3):330-6. [Medline].
Kalgaard OM, Seem E, Kvernebo K. Erythromelalgia: a clinical study of 87 cases. J Intern Med. Sep 1997;242(3):191-7. [Medline].
Dupont E, Illum F, Olivarius Bde F. Bromocriptine and erythromelalgia-like eruptions. Neurology. May 1983;33(5):670. [Medline].
Zheng ZM, Zhang JH, Hu JM, et al. Poxviruses isolated from epidemic erythromelalgia in China. Lancet. Feb 6 1988;1(8580):296. [Medline].
Alhadad A, Wollmer P, Svensson A, Eriksson KF. Erythromelalgia: Incidence and clinical experience in a single centre in Sweden. Vasa. Jan 2012;41(1):43-8. [Medline].
Cook-Norris RH, Tollefson MM, Cruz-Inigo AE, Sandroni P, Davis MD, Davis DM. Pediatric erythromelalgia: A retrospective review of 32 cases evaluated at Mayo Clinic over a 37-year period. J Am Acad Dermatol. Jul 26 2011;[Medline].
Cohen JS. High-dose oral magnesium treatment of chronic, intractable erythromelalgia. Ann Pharmacother. Feb 2002;36(2):255-60. [Medline].
Davis MD, Sandroni P. Lidocaine patch for pain of erythromelalgia: follow-up of 34 patients. Arch Dermatol. Oct 2005;141(10):1320-1.
Skeik N, Rooke TW, Davis MD, Davis DM, Kalsi H, Kurth I, et al. Severe case and literature review of primary erythromelalgia: Novel SCN9A gene mutation. Vasc Med. Nov 9 2011;[Medline].
Legroux-Crespel E, Sassolas B, Guillet G, et al. [Treatment of familial erythermalgia with the association of lidocaine and mexiletine]. Ann Dermatol Venereol. Apr 2003;130(4):429-33. [Medline].
Iqbal J, Bhat MI, Charoo BA, et al. Experience with oral mexiletine in primary erythromelalgia in children. Ann Saudi Med. Jul-Aug 2009;29(4):316-8. [Medline].
Goldberg YP, Price N, Namdari R, Cohen CJ, Lamers MH, Winters C, et al. Treatment of Na(v)1.7-mediated pain in inherited erythromelalgia using a novel sodium channel blocker. Pain. Jan 2012;153(1):80-5. [Medline].
Kalgaard OM, Mork C, Kvernebo K. Prostacyclin reduces symptoms and sympathetic dysfunction in erythromelalgia in a double-blind randomized pilot study. Acta Derm Venereol. 2003;83(6):442-4. [Medline].
Moody S, Pacheco S, Butler IJ, Koenig MK. Secondary Erythromelalgia Successfully Treated With Intravenous Immunoglobulin. J Child Neurol. Dec 7 2011;[Medline].
Cacciola RR, Cipolla A, Di Francesco E, et al. Treatment of symptomatic patients with essential thrombocythemia: effectiveness of anagrelide. Am J Hematol. Sep 2005;80(1):81-3.

