Identification of the SCN9A Variant c.647T>C (p. Phe216Ser) in a Patient With Primary Erythromelalgia. Kida M, Ueda-Hayakawa I, Morisaka H, Arase N, Koguchi-Yoshioka H , et al. The Journal of dermatology • 2026-May-25 View on PubMed → DOI →