Aphthous stomatitis countries. Within nations, it is more common in higher socioeconomic groups. Males and females are affected in an equal ratio, and the peak age of onset between 10 and 19 years. About 80% of people with aphthous stomatitis first developed the condition before the age of 30. There have been reports of ethnic variation. For example, in the United States, aphthous stomatitis may be three times more common in white-skinned people than black-skinned people. "Aphthous affectations" and "aphthous ulcerations" of the mouth are mentioned several times in the treatise "Of the Epidemics" (part of the Hippocratic corpus, in the 4th
The body in traditional Chinese medicine the San Jiao or Triple Burner has no anatomical correspondent at all, and is said to be completely a functional entity. Chinese Medicine and The Model of the Body is founded on the balance of the five elements: Earth, Metal, Water, Wood, and Fire. The elements are infinitely linked, consuming and influencing each other. Each element corresponds to different organs in the body. The organs act as representatives of the qualities of different elements, which impact the physical and mental body in respective ways. Each organ is categorized as either Yin or Yang. The energies of Yin and Yang are