Objective : This study is to report 4 Eumyangyeokchahunobok-byung cases diagnosed and treated according to newly hypothesized Eumyangyeokchahunobok-byung definition based on Shanghanlun disease pattern identification diagnostic system.

Methods : We analyzed 4 clinical cases diagnosed with Eumyangyeokchahunobok-byung and treated by herbal medicine, which included in Eumyangyeokchahunobok-byung chapter of Shanghanlun according to newly hypothesized definition.

Results :  Dermatology Life Quality Index decreased from 25 to 10 on first patient, dizziness handicap inventory decreased  from 64 to 2 on second patient, dizziness handicap inventory also decreased  from 56 to 2 on third patient, and fatigue severity scale decreased  from 7 to 2 on fourth patient.

Conclusions : Not only all the patients' chief complaints relieved but their other clinical problems such as allergic rhinitis, body pain, constipation, reflux esophagitis also improved. These results highly insist that there is quite a possibility that Eumyangyeokchahunobokbyung means various diseases caused by reversed sleep cycle.

KeyWords : Eumyangyeokchahunobok-byung, Shanghanlun, Disease pattern identification diagnostic system, Moryeotaeksa-san, Jukyeopseokgo-tang, Leejung-tang