Salicylic Acid.--Dermatitis of an erythematous and urticarial type,

{604} with symptoms of general disturbance, is sometimes seen in

patients taking salicylic acid or its salts. An efflorescence of

vesicles and pustules about the hands and feet, with profuse sweating,

has been recorded. A case in which ecchymotic patches about the back

and neighboring regions appeared from the use of this drug has been

reported.

Santonine.--An instance of an urticarial outbreak with oedema of the

eyelids and swelling of the face has been observed following the

ingestion of this drug.

Stramonium,--An erythematous efflorescence has been recorded as

following this drug.

Strychnia.--A case is on record in which a rash of a scarlatinoid type

followed a dose of one-twenty-fourth of a grain of strychnia.

Turpentine.--Both erythematous and papular eruptions, usually itchy,

have appeared as the result of large doses of turpentine, occurring

principally about the face and upper trunk, the papules being minute in

character. A vesicular eruption has also been noticed somewhat similar

to vesicular eczema.

DERMATITIS FACTITIA.--Feigned diseases of the skin are not uncommon.

Erythema, vesicles, bullæ, and gangrene have been brought about,

chiefly in hysterical females, to gain sympathy, or, as also in other

individuals, for the purpose of deception, by the action of friction,

acids, or strong alkalies.

Dermatitis Gangrænosa.

Dermatitis gangrænosa, or gangrene of the skin, is a rare affection. It

may be idiopathic or symptomatic. As an idiopathic disease it begins

usually as circular, erythematous, dark-red spots, tending to appear

symmetrically, either painful and hyperæsthetic or without sensation.

Malaise, fever, and symptoms of debility usually precede and accompany

its development. The lesions go on to gangrene and sloughing, recovery

taking place or a fatal termination gradually resulting. There may be

several or as many as thirty or forty patches. The progress of the

disease, whether terminating fatally or in recovery, is slow, usually

of several months' duration. Gangrene of the skin as a symptomatic

affection is occasionally seen in grave cerebral and spinal diseases,

and also in diabetes.

Furunculus.

Furunculus, or boil, is a deep-seated, inflammatory disease,

characterized by one or more variously-sized, circumscribed, rounded,

more or less acuminated, firm, painful formations, usually terminating

in central suppuration.

In the beginning the lesion appears as a reddish spot, small, rounded,

imperfectly defined, inflammatory, and painful to the touch, having its

seat in the corium; it gradually becomes larger, raised, and with

marked tendency to central suppuration, usually maturing in from one to

two weeks, when it appears as a painful, deep-red, rounded, pointed,

inflammatory formation, varying in size from a pea to a walnut,

exhibiting central suppuration, the so-called core. In some cases there

is no {605} tendency to core-formation, such lesions being popularly

designated blind boils.

A furuncle is usually painful, of a throbbing nature, which persists

until suppuration has taken place and the contents discharged. The

intensity of the inflammation gives rise to considerable areolar

swelling and hyperæmia. There may be but one lesion present, or, as

more frequently happens, several may exist at the same time scattered

over different regions. In the latter case, after a partial or complete

disappearance of the first crop, a second outbreak frequently occurs,

to be followed later by a third, and so on, constituting furunculosis.

The lesions are usually isolated. No region of the body is exempt; the

face, neck, back, and buttocks are favorite localities. Sympathetic

constitutional disturbance, more or less marked in severe cases, is

usually present. Boils sometimes occur in association with eczema. In

general, they are the result of a depressed state of the system.

Friction, a contusion, or similar local irritation is often the

exciting cause. They are met with in association with diabetes, pyæmia,

uræmia, chlorosis, fevers, and like conditions. Although observed at

all periods of life, they are more common during adolescence and in old

age. The view has been advanced that a furuncle is due to the presence

of a microbe (Torula pyogenica). According to Pasteur, this bacterium

is identical with that of abscesses of the soft parts, etc.

The lesion usually has its starting-point in a sebaceous gland in the

upper part of the corium, or, deeper, in a sweat-gland or

hair-follicle. Beginning in a sweat-gland in the deeper structures it

constitutes the so-called connective-tissue furuncle, or hydroadenitis

of some authors. The core, or central suppuration, is usually made up

of the tissue of the gland in which the boil had its origin, and pus,

and when cast off appears as a whitish, tough, pultaceous mass. A more

or less permanent cicatrix usually results. There is only one affection

with which a furuncle is likely to be confounded--namely, carbuncle. In

this latter, however, the lesion is considerably larger, flattened

instead of rounded and pointed, the pain of an intense character and in

a measure independent of touch or injury. Moreover, a carbuncle has

several points of suppuration, the boil having but one, and the former,

moreover, is rarely multiple.

When occurring in crops, the affection is often rebellious to

treatment. Both constitutional and local measures, especially the

former, are demanded. Functional disorders are to be regulated, and any

faulty condition of the general health corrected. Tonics, such as

quinine, iron, strychnia, mineral acids, and arsenic, are not

infrequently of service. The last remedy usually proves of most value

in those cases in which the lesions appear in crops. The preparations

of sulphur are of positive service in many cases of the disease;

hyposulphite of sodium, ten or fifteen grains three or four times

daily, is one of the most valuable remedies we possess, and with the

same view calx sulphurata, one-tenth to one-half grain five or six

times daily, may be prescribed. Alkalies, especially liquor potassæ in

ten or fifteen minim doses, are not infrequently beneficial. The

compound syrup of the hypophosphites may also be employed with the hope

of obtaining relief. In regard to the diet, the most nutritious food,

liberally partaken of, is, as a rule, to be advised. At times change of

air and scene will act most happily.

{606} Concerning the local treatment, the lesion in the first stage may

possibly be aborted, or at least modified in its course, by the

application to the forming core of a strong solution or of a crystal of

carbolic acid. This procedure is preferable to the actual cautery. If

the lesion be farther advanced, a drop of carbolic acid and glycerin,

equal parts, will often give instantaneous relief and arrest the

progress of the boil. A few drops of a 5 per cent. carbolic-acid

solution may also be injected into the apex of the boil with good

results. For the same purpose painting the parts with tincture of

camphor or tincture of iodine is advised. An ointment of carbolic

acid--as, for example, resin cerate an ounce, carbolic acid from

fifteen to thirty grains--applied as a plaster will be found useful.

The application of poultices affords ease in some cases. As soon as

suppuration has been fully established evacuation of the contents will

shorten the course of the process. If the boil is open and discharging,

boric acid in powder, freely applied, has been recommended.

* * * * *

ALEPPO BOUTON, BOIL, OR EVIL, DELHI BOIL, AND BISKRA BOUTON.--The first

of these diseases, the Aleppo bouton, boil, or evil, is observed at

Aleppo, Bagdad, and the neighboring regions. Delhi boil is not uncommon

in India, and the Biskra bouton is found in Algeria and elsewhere along

the African coast. In fact, these diseases are more or less epidemic in

these countries. They have been considered as allied to furuncle, but

their true nature is somewhat obscure. The three affections are

probably examples of the same disease, modified, it may be, by climate,

habits, etc. They begin as a papule or tubercle, soon becoming a

pustule, and then ulcerate, leaving a cicatrix.

Carbunculus.

Carbunculus (anthrax, carbuncle) is a firm, more or less circumscribed,

painful, deep-seated inflammation of the skin and subcutaneous

structures, variable as to size, terminating in a slough. General

malaise, slight fever, and chilliness precede and usher in the disease.

Locally, there appears at first a more or less circumscribed, circular

redness, with swelling, tenderness, and pain. Soon a phlegmonous

inflammation develops, the surface at times showing vesiculation, the

lesion involving an area several inches in diameter and of considerable

depth. The progress of the disease is not uniform. At the end of a week

or two suppuration is fully established, the first signs of this

process appearing about the hair-follicles. The tissues are now soft

and boggy; the skin becomes gangrenous, breaking down at numerous

points, disclosing centres of suppuration, giving the lesion a

cribriform appearance. Finally, the whole mass sloughs away either as

an entirety or in portions, and results in an open, deep ulcer with

hard and raised edges, which gradually granulates and heals, leaving a

pigmented cicatrix. The area involved varies, and may be extensive,

sometimes as much as six or eight inches in diameter. The favorite

localities for its development are the nape of the neck, shoulders,

back, and buttocks. As a rule, the process ends in three to six weeks.

Usually only one lesion exists. When there are several or where they

follow each other in succession, the general condition is apt to {607}

become markedly depressed, and even a fatal result is not at all

uncommon.

The causes which give rise to the affection are similar to those which

predispose to furuncle. It is generally observed in those whose health

is impaired or broken down. It is more common in men, and is usually

encountered in those past middle age. The inflammation starts

simultaneously at numerous points, usually from the hair-follicles,

sweat and sebaceous glands, extends in all directions, and eventually

terminates in gangrene of the whole area. The inflammatory centres

break down rapidly, from each of which the collected pus finds its way

to the surface, thus producing the cribriform appearance. According to

Warren, the pus ascends by way of the columnæ adiposæ to the

hair-follicles, and thence to the surface. The process may involve

fascia, muscles, and even periosteum and bone. The disease is to be

distinguished from furuncle by its greater size, flatness, and the

multiple points of suppuration. From erysipelas, to which in the

beginning it may have some resemblance, it is to be differentiated by

the hardness, painfulness, and circumscribed character of the lesion.

It is also to be distinguished from malignant pustule. It is always to

be looked upon as a serious affection, especially when occurring in

those past the age of fifty or sixty and in those in a debilitated

condition. Carbuncle when occurring about the face terminates in a

large proportion of the cases fatally.

The treatment is both local and general. The local measures are in the

main the same as advised for furuncle. In the early stages the actual

cautery may arrest the process. Injections of from eight to twelve

drops of a 5 or 10 per cent. solution of carbolic acid will be found

valuable, often affording speedy relief. Frequently-repeated paintings

with tincture of iodine in the early stage may prove of service.

Poultices are of value, and will often diminish the tension and the

pain. A dressing of white lead, laid on thick, is highly spoken of by

Milton and other English observers. When the purulent collections have

broken through the skin the application of a cupping-glass to draw out

the pus has been advised. The wound should be dressed with carbolized

oil. The use of the moist-sponge dressing, with the view of absorbing

the pus, as recommended by McClellan, may be advised. Compression may

also be resorted to with good results. The weight of authority is

against the practice of incision, although in some cases it is to be

recommended, the operation being preceded by hypodermic injections of

cocaine. The general treatment should be of a tonic character.

Iron--preferably the tincture of the chloride--and quinine in large

doses are to be advised. A liberal diet of nourishing food, with a

moderate amount of stimulants, is indicated in almost every case.

Herpes Simplex.

Herpes simplex is an acute, non-contagious, inflammatory disease,

characterized by the formation of pinhead- to pea-sized vesicles

arranged in groups and occurring for the most part about the face and

genitalia. Malaise and pyrexia in severe cases may precede the

eruption. Usually, however, the efflorescence appears without any

systemic disturbance. The lesions {608} are rarely numerous, and appear

in the form of one or more clusters. Sense of heat in the part usually

signalizes the outbreak. The vesicles show no tendency to rupture. The

contents are at first clear, but later become cloudy or puriform, and

dry to yellowish or brownish crusts, which subsequently fall off,

leaving the skin normal. If broken or rubbed, a superficial excoriation

results. The affection is acute, ordinarily running its course, if

unirritated, in a week or ten days. It is liable to recur from time to

time. Occurring about the face, it is designated herpes facialis. It is

usually seen about the lips (herpes labialis), frequently about the alæ

of the nose, and occasionally on other regions of the face. The mucous

membrane of the mouth may also be invaded. The lesions may remain

discrete or may coalesce, forming small blebs.

When the affection shows itself upon the genitalia, it is termed herpes

progenitalis; and when on the prepuce, a common site, herpes

præputialis. In the female, in whom it occurs here much less

frequently, the labia majora and labia minora, as well as the skin

about the vulva, are the parts usually invaded. It is seen most

commonly in the young and middle-aged. Burning, slight itching,

sometimes darting pain, and more or less oedema, may be present. As a

rule, the lesions are not numerous, the average number being five or

six. They incline to group, and ordinarily but one group is seen.

Unless irritated they run the same favorable course as when on other

regions. If, however, as often happens, especially when occurring about

the inner surface of the prepuce or the glans, or on the inner surface

of the labia, the vesicles break down and excoriations resembling

ulcers result. The disease is even more prone to recur than when on

other parts.

Herpes of the face is often observed in association with lung and

febrile diseases. Malaria is sometimes the cause, and digestive and

nervous disorders frequently predispose to it. Herpes of the genitalia,

it is stated, is seen most frequently in those who have previously had

gonorrhoea, chancroid, or chancre, especially the first. It may be

that, occurring in such persons, it excites solicitude, and hence

medical relief is sought, and the relative frequency of such causes

unduly increased. A long prepuce is a predisposing factor.

The characters of the eruption, as it occurs about the face, are so

well marked as to preclude an error in diagnosis. About the genitalia,

however, the lesions may become abraded or irritated, and may simulate

chancroids. The history, course, and character of the two affections

should in doubtful cases be carefully considered before expressing a

positive opinion.

In herpes facialis, flexible collodion, camphorated cold cream, or the

lotion of zinc sulphate and potassium sulphide (see treatment of acne

for formula) may be prescribed. In herpes progenitalis cleanliness is

of great importance. Liquor gutta-perchæ, a paste composed of equal

parts of mucilage of acacia, glycerin, and oxide of zinc, lotions of

sulphate of zinc, a few grains to the ounce, and of ammonia-water, may

be prescribed. A saturated solution of boric acid and a dressing of

borated absorbent cotton are likewise useful, while in some cases

dusting the parts with calomel will prove beneficial. Where the

affection recurs, if the prepuce is long, circumcision may afford

future immunity.

{609} Herpes Iris.

Herpes iris is an acute non-contagious disease, consisting of one or

more groups of inflammatory vesicles or blebs, arranged usually in the

form of more or less complete concentric rings, the whole efflorescence

being somewhat variegated in color.

The eruption most frequently appears on the backs of the hands and

feet, especially the former. It begins as a simple papule or vesicle,

which soon disappears, a ring of discrete or confluent vesicles now

appearing around the periphery. The process may be arrested at this

stage, the lesions soon undergoing involution, or still another ring

may form. The vesicles may be discrete or confluent, but usually they

coalesce, forming small or large blebs. The number of groups or patches

in most cases is not large, three or four usually being present at one

period; but sometimes as many as a dozen or more exist. The eruption is

usually symmetrical. The difference in the age of the several rings

that go to form a single patch gives rise to the variegated colors

which characterize the disease. In size the vesicles vary from a

pinhead to a pea, and the patches from a fraction of an inch to several

inches in diameter. They contain a yellowish, clear, or puriform fluid

which rapidly dries to crusts. New patches, as a rule, continue to

appear in crops for a few weeks, when the process gradually subsides,

leaving slight pigmentation, which soon fades away. Variations in the

type of the efflorescence are not uncommon. In some instances the

lesions barely reach vesiculation, being rather papulo-vesicular, while

in others blebs may appear at the beginning in the place of vesicles.

The subjective symptoms of itching and burning are either lacking or

are not marked. Malaise or slight febrile action may usher in the

disease, or, as is usually the case, constitutional disturbance is not

observed. The affection is comparatively rare. Recurrences may take

place, usually at intervals of a year or more.

It is seen chiefly in spring and autumn, and is met with in both sexes,

but is more common in children and young persons. Its nature is

obscure. It is probably due to the same causes that are responsible for

erythema multiforme, a disease to which it is very closely allied. The

process also is intimately identical with that affection, it being,

apparently, merely an advanced stage or modification of that disease.

It is to be distinguished from ringworm, erythema multiforme, herpes

zoster, pemphigus, and dermatitis herpetiformis. In ringworm the

process is more superficial, and usually is less inflammatory, the

papules or vesico-papules being scarcely distinguishable; in doubtful

cases the microscope will decide. Vesiculation will serve to

differentiate from erythema multiforme. The absence of neuralgic pain,

the distribution, location, and arrangement of the vesicles, are

sufficient to exclude herpes zoster. In pemphigus the size,

distribution, arrangement, mode of formation, and course of the lesions

are different from herpes iris.

The affection tends to spontaneous disappearance in the course of a

week or two; nor does treatment seem to influence materially its

course. The bowels should be opened with saline laxatives, and other

symptoms treated on general principles. Tonics, especially quinine, are

in some cases of value. Locally, dusting-powders, such as oxide of

zinc, starch, and lycopodium, may be frequently applied. Cooling,

antipruritic, or {610} astringent lotions--such, for example, as those

used in acute vesicular eczema--will generally prove grateful.

Herpes Zoster.

Herpes zoster, or zoster, popularly known as shingles, is an acute,

self-limited, inflammatory disease, characterized by groups of vesicles

with inflammatory bases situated along or over a nerve-tract, and

accompanied by more or less neuralgic pain.

As a rule, the cutaneous lesions are preceded, usually for several

days, by neuralgic or burning pains in the part, and in some cases mild

febrile disturbance. An inflamed state of the skin, in the form of one

or several patches, is seen, which is soon followed by the formation of

vesico-papules, which rapidly become distinct vesicles. They vary in

size from a pinhead to a pea, are situated on inflamed bases, and are

irregularly grouped. They may occur in small numbers, or, as is usual,

be numerous, in which case they are crowded together. In the latter

event they may coalesce here and there, forming larger lesions or

irregular patches. They continue to appear for five or six days, remain

stationary a short time, and then begin to subside. One or more groups

may be present; usually a half dozen or more are seen in the one case.

The vesicles contain a clear yellowish liquid, which gradually becomes

puriform; those that appear last rarely reach full development. They

show no tendency to rupture, are distended, subsequently becoming

slightly umbilicated, and by the end of two weeks have gradually dried

to thin yellowish or brownish crusts, which soon drop off. Except in

severe cases, especially the hemorrhagic form, scarring rarely results.

A tendency to group is characteristic of the eruption. The disease is

acute, and runs its course usually in from ten to twenty days.

In some instances the lesions run an abortive course, barely arriving

at the point of vesiculation. On the other hand, small blebs and

pustules may be formed. In severe cases the vesicles may become

hemorrhagic. The neuralgic pain may accompany the disease, and in

severe cases, especially in persons advanced in years, may persist long

after the eruption has subsided. In some cases burning is the only

subjective symptom complained of. The disease is not confined to any

age or sex. It is more common in the winter season. As a rule, it is

limited to one side of the body. Moreover, it is rarely seen in the

same individual twice. The intercostal and lumbar regions show the

eruption most frequently. In zoster of the orbital region the eye

becomes involved, and the disease may in some instances terminate in

loss of sight, and even in destruction of the eyeball. Any nerve-tract

or part of the body may be the seat of the eruption, hence the names

zoster capitis, facialis, brachialis, pectoralis, etc. The disease is

not uncommon.

The eruption is dependent upon an irritable and inflamed state of the

ganglia or nerves--a neuritis. Hence any agent that may bring about

this condition is capable of producing the eruption. Among such may be

included atmospheric changes, sudden checking of the perspiration,

compression, nerve-injuries, operations, and similar influences. In

some instances the eruption is noted to follow the administration of

arsenic. {611} The primary seat of the affection is usually in the

spinal ganglia; they are found softened and altered in structure and

the nerves inflamed and thickened. It may, however, have its beginning

along the tract of a nerve or in the peripheral branches. In fact, it

may be spinal, ganglionic, or peripheral in origin. The vesicles are

found to have their seat in the lower strata of the rete. The

surrounding corium and papillæ show more or less round-cell

infiltration, with dilatation of the papillary blood-vessels. A

perineuritis, with cell-infiltration in and about the neurilemma, is

also usually observed. The vesicles contain rete-cells, pus-corpuscles,

and serum.

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