Episodic Pain Syndrome, Familial, 3, also known as familial episodic pain syndrome with predominantly lower limb involvement, is related to familial episodic pain syndrome and neuropathy, hereditary sensory and autonomic, type vi. An important gene associated with Episodic Pain Syndrome, Familial, 3 is SCN11A (Sodium Voltage-Gated Channel Alpha Subunit 11), and among its related pathways/superpathways are Cardiac conduction and Neuropathic Pain-Signaling in Dorsal Horn Neurons. Affiliated tissues include peripheral nerve, and related phenotypes are abnormal autonomic nervous system physiology and pain