Evaluation Of The Efficacy And Safety Of Single Doses Of PF-05089771 In Patients With Primary (Inherited) Erythromelalgia

A single oral dose of PF-05089771 1600 mg solution to be administered on Day 1 of each treatment session. There are 2 treatment sessions, therefore 2 single oral doses of PF-05089771 will be adminstered.

Placebo for PF-05089771 1600 mg solution administered in each treatment session. There are 2 treatment sessions, therefore 2 single oral doses of placebo will be administered.