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PSORIASIS , a skin See also:affection characterized by the occurrence of See also:flat dry patches of varying See also:size covered with silvery See also:- WHITE
- WHITE, ANDREW DICKSON (1832– )
- WHITE, GILBERT (1720–1793)
- WHITE, HENRY KIRKE (1785-1806)
- WHITE, HUGH LAWSON (1773-1840)
- WHITE, JOSEPH BLANCO (1775-1841)
- WHITE, RICHARD GRANT (1822-1885)
- WHITE, ROBERT (1645-1704)
- WHITE, SIR GEORGE STUART (1835– )
- WHITE, SIR THOMAS (1492-1567)
- WHITE, SIR WILLIAM ARTHUR (1824--1891)
- WHITE, SIR WILLIAM HENRY (1845– )
- WHITE, THOMAS (1628-1698)
- WHITE, THOMAS (c. 1550-1624)
white scales. Next to See also:eczema and See also:ringworm it is one of the most commonly found skin diseases. It occurs frequently during See also:infancy and See also:early adult See also:life, and rarely begins after the See also:age of fifty. Though a parasitic origin has been suggested, no bacteriological See also:factor has yet been found, and it has been demonstrated that psoriasis may follow on See also:nervous See also:shock, See also:gout, See also:mental emotion and insufficient nourishment. It may also follow an attack of See also:scarlet See also:fever or See also:erysipelas. The site of the disease may be determined by an See also:abrasion or other injury of the skin,or even an irritation caused by See also:friction of the clothing. The favourite starting point of the See also:lesion is either the elbows or the fronts of the knees. It is nearly always symmetrical in its See also:distribution, and spreads over the See also:trunk and the extensor surfaces of the limbs, in contrast to eczema, which selects the flexor surfaces. The hairy See also:scalp may also be affected. The eruption generally first shows itself as one or more papules, at first red and spreading, and later white from the formation of scales and red at the spreading margin, where it is surrounded by a hyperaemic See also:zone. On removing the scales is seen a smooth hyperaemic zone dotted with red spots. The patches spread centrifugally and may remain stationary for a See also:long See also:- TIME (0. Eng. Lima, cf. Icel. timi, Swed. timme, hour, Dan. time; from the root also seen in " tide," properly the time of between the flow and ebb of the sea, cf. O. Eng. getidan, to happen, " even-tide," &c.; it is not directly related to Lat. tempus)
- TIME, MEASUREMENT OF
- TIME, STANDARD
time or coalesce with other patches and See also:cover large areas of skin. In some cases involution of the central portion accompanies the spreading of the patch, and large concentric rings are formed. The lesions may persist for years, or spontaneously disappear, leaving behind a slight See also:- BROWN
- BROWN, CHARLES BROCKDEN (1771-181o)
- BROWN, FORD MADOX (1821-1893)
- BROWN, FRANCIS (1849- )
- BROWN, GEORGE (1818-188o)
- BROWN, HENRY KIRKE (1814-1886)
- BROWN, JACOB (1775–1828)
- BROWN, JOHN (1715–1766)
- BROWN, JOHN (1722-1787)
- BROWN, JOHN (1735–1788)
- BROWN, JOHN (1784–1858)
- BROWN, JOHN (1800-1859)
- BROWN, JOHN (1810—1882)
- BROWN, JOHN GEORGE (1831— )
- BROWN, ROBERT (1773-1858)
- BROWN, SAMUEL MORISON (1817—1856)
- BROWN, SIR GEORGE (1790-1865)
- BROWN, SIR JOHN (1816-1896)
- BROWN, SIR WILLIAM, BART
- BROWN, THOMAS (1663-1704)
- BROWN, THOMAS (1778-1820)
- BROWN, THOMAS EDWARD (1830-1897)
- BROWN, WILLIAM LAURENCE (1755–1830)
brown stain. The symptoms are usually slight and there is little or no irritation or itching, and no See also:pain except in a See also:form which is associated with osteo-See also:arthritis. The disease, though of noted chronicity, is subject to sudden exacerbations, and may reappear at intervals after it has completely disappeared. It has little or no effect upon the See also:general See also:health. Several forms have been described, viz. the See also:simple uncomplicated, the nervous, the osteo-arthritic, and the seborrhoeic. Varieties have also been named according to the See also:character of the patches, such as psoriasis punctata, guttata, circinata or nummularis, or when large areas are involved and the skin is harsh, dry and cracked, it is known as psoriasis inveterata. The pathological changes taking See also:place in the skin have been described as an inflammation of the papillae and corium, with a down-growth of the stratum mucosum between the papillae and an increase of the horny layer (keratosis). This latter, however, has been said to be due to the formation in it of tiny dry abscesses. The silvery See also:appearance of the scales is due to the inclusion of See also:air globules within them. The treatment is hygienic, constitutional and See also:local. The clothing must be regulated so as to prevent undue See also:perspiration or irritation or chafing of the skin. The most effective local application is chrysarobin used as an ointment. A See also:bath of hot See also:water and See also:soap should first be given, or an alkaline bath, in See also:- ORDER
- ORDER (through Fr. ordre, for earlier ordene, from Lat. ordo, ordinis, rank, service, arrangement; the ultimate source is generally taken to be the root seen in Lat. oriri, rise, arise, begin; cf. " origin ")
- ORDER, HOLY
order to remove all the scales; the ointment is then applied, but must be used over a small See also:area at a time, as it is See also:apt to set up dermatitis. Tarry applications, such as unguentum picis liquidae, See also:creosote ointment or liquor carbonis detergens, are also useful; and radio-therapy has caused a rapid removal of the lesions, but neither it nor the ointment has prevented subsequent recurrence. In chronic cases the See also:sulphur-water See also:baths of See also:Harrogate, See also:Aix-See also:les-Bains and Aachen have been successful. The See also:internal See also:administration of small doses of vinum antimoniale, in acute cases, or of See also:arsenic (in gradually increasing doses of the liquor arsenicalis) in chronic cases, is undoubtedly beneficial.
End of Article: PSORIASIS
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