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Arch Dermatol. 2002;138:312.

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

VOL. XX.

MARCH, 1902.

NO. 3.

The Etiology of Alopecia. —By DELOS L. PARKER (Medical Record, LX, 1901, p. 45).

According to the opinion of the writer alopecia is caused by a poisonous material (trichotoxicon) absorbed by the blood from the air-cells of the lungs, where it has been elaborated by the decomposition of the organic material normally present in respired airs. In some individuals, whose breathing is of the superior costal type, respired air remains undisturbed in the upper portions of their lungs. The respired air contains organic material, which in the presence of warmth and moisture of the lung cavity undergoes decomposition, and a product is elaborated which being taken up by the blood exerts a selective poisonous action upon the growth of the hair and becomes the cause of alopecia.

In support of this theory the writer brings forth a statement that "A personal observation . . . [Full Text of this Article]

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