A treatise on the principles and practice of medicine / by Arthur R. Edwards.

  • Edwards, Arthur R. (Arthur Robin), 1867-1936.
Date:
1907
Catalogue details

Licence: Public Domain Mark

Credit: A treatise on the principles and practice of medicine / by Arthur R. Edwards. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

    1298/1364 (page 1266)
    may result from the parasite itself), vomiting, delirium or convulsions. The extr. spigelioe fl. (3i) may be given with or without the santonin. These remedies do not kill the parasite, but merely render it uncom- fortable. II. Oxyuris Vermicularis (Seat Worm, Pin or Thread Worm). Fig. 94. ^ Fig. 95. Children are more often affected than adults, and women more often than men. They are relatively frequent in the insane. The female in length measures 10 and the male 4 mm. (See Figs. 94, 95 and 96.) Ingested ova develop in the small intestine, where the worms mature and cohabit; afterward they exist chiefly in the lower colon and rectum. The eggs remain in the mother until the worm is expelled, though she occasionally aborts in the bowel. Infection occurs in those who are the most uncleanly, as in children and the insane. Infection may occur from water and green vegetables, and reinfection is not uncommon from scratching the anus during sleep and thus crushing the parasite; Eich- horst frequently found ova in the minute fsecal parti- cles about the anus and Zenker demon- strated repeatedly their presence under the finger nails. As the par- asites migrate at night, the symp- toms are greatest at that time; they may be found on the bed sheet. The anal itching and rectal irritation are often excessive; periproctal suppuration may be excited. If any vaginal discharge moistens the perineum (and only then), they can wander into the vagina, causing irritation, sexual stimulation or masturbation. Dis- turbance of the sleep and appetite, nervous symptoms and ansemia may result. Diarrhoea is due to large numbers of parasites. Eggs of OxjTiris vermicularis: X 275. (After Eichorst.) Fig. 96. Oxyuris vermicularis, magnified: a, young female; b, male; c, mature female, full of eggs. (Payne.) Oxyuris vermicularis: natural size. (Eichorst.)