

SEB 



Large Sebaceous Gland. 

 . Hair in its follicle. 2, 3, 4, 5. Lobules of 

 the gland. 6. Excretory duct traversed 



bv the hair. 



Pertaining to or 



the ischium. S.-worm, thread-worm. See Oxyuris, 

 under Parasites [Animal), Table of. 



. Gold of the alchemists ; also alum. 



Sebaceous (se-ba / -shus) [sebum, suet, fat]. Pertaining 

 to fat or suet, 

 and especial- 

 ;e seba- 

 ceous glands 

 of the corium 

 of the skin. 

 S. Cyst, 

 wen, athe- 

 roma stea- 

 toma ; a cystic 

 tumor vary- 

 ing in size 

 from a millet- 

 see d to an 



I orange, situ- 

 ated in the 

 skin or sub- 

 cutaneous tis- 

 sue. It occurs 

 most fre- 

 quently on 

 the scalp, 

 face, back, 

 and scrotum, 

 and may be 

 single or mul- 

 tiple. S. Flux. See Seborrhea. 



aebacic {se-ba' '-sik) [sebum, fat], 

 derived from sebum. S. Acid, 



a dibasic acid obtained by dry distillation of oleic 

 acid and bv the action of sodium hydroxid on castor- 

 oil. 

 Sebacin (se-ba'-sin) [sebum, fat]. I. A hydrocarbon 

 obtained by distilling calcium sebate with an excess of 

 j calcium carbonate. 2. An unctuous substance found 

 i in the fruit of Myristica sebifera. 

 ebadilla (seb-ad-W -ah) . See Cevadilla. 

 ebastomania [se-bas-to-ma' '-ne-ah) [ae3aar6c, revered ; 



, madness]. Religious insanity, 

 ebate se'-bat) [sebum, fat]. A salt of sebacic 

 I acid, 

 ebel. See Pannus oculi. 



ebesten 1 se-bes' '-ten) [Ar. sebestan, the fruit sebesten]. 



j A tree of Asia, Cordia rnyxa L. ; also, C. obliqua ; also 



their edible fruits, called sebesten plums. The latter, 



i dried, have been much used for their demulcent 



1 qualities. Unof. 



ebic [se'-bik). See Sebacic. 



ebiferous [se-bif'-er-us) [sebum, fat ; ferre, to bear]. 

 Same as Sebiparous. 



ebiparous {se-bif/ -ar-us) [sebum, fat ; parere, to pro- 

 duce]. Forming or producing sweat, 

 ebolith (seb'-o-lith) [sebum, fat; TuOoc, stone]. A cal- 

 culus, or hard concretion, in a sebaceous gland, 

 eborrhagia [seb-or-a f -je-ah). See Seborrhea. 

 eborrhea, Seborrhcea {seb-or-e f -ah) [sebum, suet; p6la, 

 a flow]. Sebaceous flux ; stearrkea ; seborrhagia ; stea- 

 torrhea; a disorder of the secretory organs of the skin, 

 in which there is an alteration and increase of sebaceous 

 secretion, and, according to some, an involvement of 

 the sweat-coils, as well as of the sebaceous glands. It 

 is characterized by the formation of an oily, waxy, or 

 scaly accumulation on the surface. S. adiposa. See 

 tosa. S. amianthacea, S. capillitii, S. capitis, 



El of the scalp. See S. sicca and Alopecia 

 a. S. cerea, the waxy form of S. sicca. It 



1309 SEBORRHEA 



is the vernix caseosa of the new-born. It occurs at 

 almost any age after birth, and includes the accumu- 

 lation of smegma beneath the prepuce. At puberty 

 and onward it is seen most commonly on the scalp, 

 where it forms dirty-looking, yellowish or greenish- 

 brown, or even black, plates or crusts of fat and epi- 

 thelium. It leads to atrophy of the hair. S. con- 

 gestiva, lupus erythematosus of Hebra ; it is the early- 

 stage of lupus erythematosus. S. corporis, S. papu- 

 losa seu lichenoides, a papular, ringed, serpiginous 

 eruption, confined to the trunk, and characterized bv 

 slight scaliness and marked greasiness, and frequently 

 associated with S. capitis. It is popularly known 

 as "flannel rash." Its synonyms are: Lichen cir- 

 c hiatus, L. circumscriptus, L. annulatus serpigi- 

 nosus, L. gyratus. S. crustosa. See S. sicca. S. 

 dermatitis. See S. corporis, S. eczema, S. eczemi- 

 formis, S. psoriasiformis , the various forms resem- 

 bling ordinary dermatitis, and comprised under the 

 general term, 6". dermatitis. S. eczema of Unna. 

 See S. dermatitis. S. eczematoid, seborrhea asso- 

 ciated with active inflammation of the scalp. The 

 margin of the affected area is well defined, and there 

 is abundant formation of flaky, fatty scales. This 

 acute condition is due to some depressing influence, 

 mental or physical. S. faciei, a common sequel of 

 variola and other exanthemata, and often associated 

 with rosacea. It affects chiefly the forehead, super- 

 ciliary regions, and sides of the nose and cheeks. The 

 scales are often greenish or blackish. S. fiuida. See 

 S. oleosa. S. furfuracea seu pityriasiformis, the 

 scaly form of S. sicca. It constitutes the condition 

 known as scurf or dandruff, and is the alopecia pity- 

 rodes of Pincus. S. genitalium, the accumulation of 

 smegma beneath the prepuce, about the clitoris, and 

 between the labia and the nymphre. S. lichenoides. 

 See S. corporis. S. localis, circumscribed seborrhea, 

 as when it occurs on the face only. S. nasi, sebor- 

 rhea attended with the formation of yellow crusts on 

 the tip of the nose (S. flavescens). S. nigra, S. ni- 

 gricans, seborrhea with the formation of dark-colored 

 crusts, the coloration being usually from dirt. See 

 Chromidrosis. S. oleosa, a variety in which there is 

 an excess of oily secretion on the surface. The face 

 has a greasy appearance and feel ; the complexion is 

 generally thick and muddy-looking. It occurs usually 

 in young adults. S. papulosa. See S. corporis. S. 

 psoriasiformis, one of the least common forms of 

 seborrhea, consisting of well-defined bright-red patches, 

 with scanty, scaly, and fatty crusts. The individual 

 patches may coalesce and cover a considerable area. 

 The eruption is chiefly met with in the axilla and on 

 the trunk. S. sicca, the commonest form of the dis- 

 ease, characterized by fine greasy or branny scales ; 

 the underlying skin is pale and leaden. There are no 

 subjective symptoms. It is one of the chief causes of 

 premature baldness. S. squamosa (seu sicca) neo- 

 natorum, ichthyosis congenita; regarded by Hebra 

 as a general seborrhea. The entire surface of the 

 body is covered with fatty, thick, epidermic plates, 

 firmly adherent to the skin, and broken by deep rha- 

 gades extending down into the corium. Owing to the 

 stiffness and contraction of the skin, the eyes cannot 

 be completely opened or closed, the lips are retracted, 

 the nose and ears are atrophied, and the toes contracted 

 and cramped. If not born dead, the subject soon suc- 

 cumbs from starvation and depression of temperature. 

 S. syphilitica, S. capitis when associated with syphil't 

 ic lesions of the scalp. S. tabescentium, a form of 

 S. furfuracea, occurring in diabetes and chronic was: 

 ing diseases. S. universalis, Pityriasis tabescentium ; 

 a variety occurring only at the end of wasting dis- 



