This article is only available in the PDF format. Download the PDF to view the article, as well as its associated figures and tables.
Pathology.—In order clearly to comprehend the pathology of sycosis it is of advantage to consider the structure of hair, the mode of its growth and nutrition.
Hair is a modification of the epithelial layer of the integument. The root of each hair is lodged in a little pit called the hair follicle. The follicle descends through the substance of the skin into the subcutaneous connective tissue. Its orifice is shaped like a funnel, the narrower and lower end of the funnel being known as the neck. Below the neck the follicle widens and terminates in a bulbous expansion. The proper wall of the hair follicle belongs to the corium and is divided into three layers: an outer, a middle and an internal. The outer is the thickest and consists of connective tissue fibres disposed parallel to the long axis of the follicle. It supports a small artery and vein and
SHOEMAKER JV. THE PATHOLOGY AND TREATMENT OF SYCOSIS.Read in the Section of Dermatology and Syphiligraphy at the Forty-first Annual Meeting of the American Medical Association, at Nashville, Tenn., May, 1890. JAMA. 1890;XV(5):177–179. doi:10.1001/jama.1890.02410310017001e
Customize your JAMA Network experience by selecting one or more topics from the list below.
Create a personal account or sign in to: