What is oriental medicine all about?

Eastern Medicine. The best definition is probably treatments whose origin and main use are still in the the oriental / eastern part of the world. Examples would be accupuncture, chinese herbal medicine like ginseng, moxibustion perhaps.
Ancient form of tx. Traditional chinese medicine has been practiced for over 5, 000 years & is the predominant type of medicine practiced in a number of areas on the globe. Acupuncture, acupupressure, herbology is just a sampling of what is available.