. A Reference handbook of the medical sciences : embracing the entire range of scientific and practical medicine and allied science. , indeed, disappearingspontaneously. Rarely, and more especially in tropicalcountries, it is of a more severe grade, and may proveobstinate. The fungus has its seat in the epidermis, es-pecially in the corneous layer. The nails are also liableto be invaded (tinea trichophytina unguium), and in con-sequence become soft or brittle, yellowish, opaque, andthickened, the changes taking place mainly about thefree borders. When the above-described clinical signsare pres
. A Reference handbook of the medical sciences : embracing the entire range of scientific and practical medicine and allied science. , indeed, disappearingspontaneously. Rarely, and more especially in tropicalcountries, it is of a more severe grade, and may proveobstinate. The fungus has its seat in the epidermis, es-pecially in the corneous layer. The nails are also liableto be invaded (tinea trichophytina unguium), and in con-sequence become soft or brittle, yellowish, opaque, andthickened, the changes taking place mainly about thefree borders. When the above-described clinical signsare present there should be no difficulty, as a rule, inrecognizing the disease. - Exceptionally it may bear aresemblance to eczema, psoriasis, and seborrhea. In alldoubtful cases the scrapings should be subjected to amicroscopical examination ; this should be carefullymade, as the fungus in this variety of ringworm is aptto be scanty. The scrapings for this purpose should betaken from the border of the patch. Tinea trichophytina capitis (commonly known as tinea 97 Tinea. I Hunt US V in nun. REFERENCE HANDBOOK OF THE MEDICAL tonsurans), or ringworm of the scalp, begins in the samemanner as that upon the general surface, but, as a rule,much more insidiously. It is not long, however, beforethe hair and follicles are invaded by the fungus. Thehair, in consequence, falls out, or becomes brittle andbreaks off. The follicles, except in very chronic cases,are slightly elevated and prominent, and the patch mayhave a puffed or goose-flesh appearance. In additionthere is slight scaliness, grayish or slate colored. It isusually at this stage of the disease that the case comesunder medical observation. At this time the followingclinical appearances are noted: a rounded, grayish,somewhat scaly, slightly elevated patch, the folliclesprominent as in goose-flesh, more or less alopecia, hereand there broken, gnawed-off-looking hairs ; some brokenoff just at the outlet of the follicle, and ap
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectmedicine, bookyear188
