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September 21, 1946


Author Affiliations


JAMA. 1946;132(3):144. doi:10.1001/jama.1946.02870380026008c

In 1932 under the title of Habitual Hyperthermia I reported the case of a woman aged 23 whose temperature had often been above the average normal for eighteen years. The "fever" led a succession of physicians to seek for infection or other causes of it and led to a long period of unnecessary, enforced semi-invalidism. On prolonged study the temperature was shown to have a regular relation to the menstrual period. It was normal or subnormal during the first half of the menstrual cycle, rose to levels higher than normal at the midperiod when the follicle matures and persisted at high levels until the day before the menses, when it dropped again.

In the majority of women the rhythmic fluctuation of the temperature seldom exceeds the average normal level of 37 C. (98.6 F.) and is usually unnoticed unless careful registrations are made. In certain otherwise normal women whose temperature