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
Social construction of the body Social construction of the body The social construction of the body is a hypothesis that affirms that the relationship between the body and the socio-cultural context occurs in both senses, and that society and culture influence the formation of its members to some extent. The body has become a social construction, in whose delimitation have participated multiple disciplines. Thus, medicine and religion can be mentioned as the agents that have traditionally influenced, together with the rules of urbanity and educational institutions. These four agents have been building a model, which every individual has as reference. According to Bryan S. Turner,