IMPETIGO 473 



(2) Ichthyosis Hystrix {vaTpi^ =- a porcupine). 



A rare condilion. It consists of loni^iludinal patches on the 

 limbs and transverse patches on the trunk, corresponding with 

 the distribution of the cutaneous nerves and associated with a 

 general xerodermia. Such ridges may rise half an inch above 

 the surrounding skin. 



TREATMENT. 



Cure is exceptional. Improvement has followed thyroid 

 extract, soft soap and warm baths with vigorous friction, 

 lanoline or salicylic acid inunctions in the last variety. 

 Some patches may require excision or scraping. 



(3) Ichthyosis Simplex. 



Extreme scaliness, may be horny like the hide of a crocodile 

 and of a similar colour. The nails break easily. There is slight 

 improvement in the summer. There is much itching, great 

 sensitiveness to cold, and a tendency to " chap " deeply. 

 (4^) Keratosis Pilaris (Xerodermia). 



This is the commonest form. The skin feels to be hard like a 



nutmeg grater, hence the name. There are dry skin, imperfect 



development of hair, and changes in the sebaceous and sweat 



glands. 



Give inunctions of myelocene ; also castor oil, followed by mag. 



sulph. and plain water enema. 



IMPETIGO. 



A pustular eruption caused by scratching, followed by inoculation 

 of streptococci and staphylococci. The proximate lymphatic glands 

 enlarge and may suppurate. The condition is contagious. 



Remove scabs by carbolized oil or carbolic acid lotion, i in lOO. 



Apply mercurial and other antiparasitic ointments. 



Vaccines may be required. 



Mag. sulph. and tonics are useful. 



INTERTRIGO SACCHAROMYCETICA. 



A rare inflammatory condition attacking the scrotocrural and 

 axillary regions caused by a Saccharomyces. 



Antiparasitic lotions and inunctions will clear it up. 



JUXTA-ARTICULAR NODES. 



Multiple subarticular movable nodules about the elbow and knee- 

 joints usually, probably caused by the fungus Nocardia carougeaui. 



The writer has seen many cases in the Choco, Colombian Republic, 

 in some of which twenty-four nodules could be counted about the joints 

 mentioned, many of them being the size of a walnut. 



Excision is advisable when thev interfere with articular movements. 



