The use of additional terms for abnormalities of menstruation appear in 1950 from 1917 sources. Although, both time periods mention words for irregularities, there is an increase in amount in 1950’s information. Yet, what is the cause for the increase? In the 1917 book, Robinson mentions that “menstruation is a perfectly normal, physiological process” (Robinson 48) for women. However, the 1950 book, The Illustrated Encyclopedia of Sex, stresses abnormal menses in further detail. In other words, there is a shift in the public’s perception about sex and the female body. Therefore, American society seems to alter from sexually liberal to sexually chaste. Notably, then, menstruation in 1950 is no longer a normal “physiological process” but, a
