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To the Editor:—
Some questions concerning baldness which were raised by Dr. Ballenger's comments in The Journal, June 27, may be answered by observations which I made while serving as technician in gross anatomy at the College of Medicine of the University of Illinois (1916-1917). I then had occasion to remove the brains of about 80 cadavers for separate use in the neurology classes and incidentally noted a seemingly obvious relation between the blood (vessel) supply to the scalp and the quantity of hair. Baldness occurred in persons in whom calcification of the skull bones apparently had not only firmly knitted the cranial sutures but also closed or narrowed various small foramens through which blood vessels pass, most prominently in persons with a luxuriant crop of hair. These blood vessels are mainly veins which normally communicate with the diploic veins in the spongy tissue of the skull bones but which
Hoelzel F. BALDNESS AND CALCIFICATION OF THE "IVORY DOME". JAMA. 1942;119(12):968. doi:10.1001/jama.1942.02830290048024
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