疫疹·卫气同病证(pestilence with petechiae with syndrome of involving both defense and qi phases)是指感受瘟毒,卫气同病,以发热微恶风,无汗或少汗,头痛身痛,颜面潮红,疹色鲜红或深红,四肢倦怠,口微渴,舌边尖红,苔黄微腻,脉滑数等为常见症的疫疹证候。