Part 94

This microscopic animal penetrates the skin, especially about the toes, producing an inflammatory swelling, vesicle or pustule, or even ulceration. It is met with in warm and tropical countries.

Treatment consists in extraction. Essential oils are used as a preventive. A carbolic-acid or alkaline lotion relieves irritation.

#Cimex Lectularius.# (Synonym: Bed-bug.)

#Describe the characters of a bed-bug bite.#

An inflammatory papule or wheal-like lesion results, somewhat hemorrhagic; the purpuric or hemorrhagic point or spot remains after the swelling subsides, but finally, in the course of several days or a few weeks, disappears.

Treatment consists in the application of alkaline or acid lotions.

#Culex.# (Synonym: Gnat; Mosquito.)

#Describe the cutaneous disturbance produced by the culex.#

It consists of an erythematous spot or a wheal-like lesion.

Alkaline or acid lotions usually give relief.

#Pulex Irritans.# (Synonym: Common Flea.)

#Describe the cutaneous disturbance produced by the pulex irritans.#

It consists of an erythematous spot with a minute central hemorrhagic point. In irritable skin, a wheal-like lesion may result.

Treatment consists of applications of camphor or ammonia-water; carbolic acid and thymol lotions are also useful.

RELATIVE FREQUENCY OF THE VARIOUS DISEASES OF SKIN AS SHOWN BY THE STATISTICS (123,746 CASES) OF THE AMERICAN DERMATOLOGICAL ASSOCIATION FOR TEN YEARS, 1878-87.

-------------------------+-------+-------+ CLASSIFICATION OF | No. | % | DISEASES. | Cases | Cases | -------------------------+-------+-------+ Class I. Disorders of the| | | Glands. | | | 1. OF THE SWEAT GLANDS.| | | Hyperidrosis | 328 | .265 | Sudamen | 268 | .216 | Anidrosis | 11 | .009 | Bromidrosis | 112 | .090 | Chromidrosis | 7 | .005 | Uridrosis | ... | .... | 2. OF THE SEBACEOUS | | | GLANDS | 238 | .193 | Seborrha: | 1812 | 1.47 | a. oleosa | 367 | .296 | b. sicca | 395 | .319 | Comedo | 1225 | .989 | Cyst: | 6 | .004 | a. Milium | 225 | .183 | b. Steatoma | 151 | .122 | Asteatosis | 8 | .006 | | | | Class II. Inflammations. | | | Exanthemata | 1770 | 1.43 | Erythema simplex | 1064 | .859 | Erythema multiforme: | 915 | .730 | a. papulosum | 325 | .262 | b. bullosum | 37 | .029 | c. nodosum | 82 | .066 | Urticaria | 2994 | 2.47 | pigmentosa | 1 | .0008| Dermatitis: | 1720 | 1.39 | a. traumatica | 468 | .378 | b. venenata | 616 | .498 | c. calorica | 224 | .187 | d. medicamentosa | 108 | .087 | e. gangrænosa | 8 | .006 | Erysipelas | 1026 | .829 | Furunculus | 2129 | 1.72 | Anthrax | 252 | .203 | Phlegmona diffusa | 265 | .215 | Pustula maligna | 197 | .159 | Herpes simplex | 2057 | 1.66 | Herpes zoster | 1428 | 1.15 | Dermatitis | | | herpetiformis | 41 | .033 | Psoriasis | 4131 | 3.34 | Pityriasis maculuta | | | et circinata | 71 | .057 | Dermatitis | | | exfoliativa | 16 | .012 | Pityriasis rubra | 44 | .032 | Lichen: | 144 | .116 | a. planus | 154 | .124 | b. ruber | 27 | .021 | Eczema: | 37661 |30.43 | a. erythematosum | .... | .... | b. papulosum | .... | .... | c. vesiculosum | .... | .... | d. madidans | .... | .... | e. pustulosum | .... | .... | f. rubrum | .... | .... | g. squamosum | .... | .... | Prurigo | 34 | .027 | Acne | 9077 | 7.34 | Acne rosacea | 398 | .321 | Sycosis | 227 | .185 | Impetigo | 1769 | 1.43 | Impetigo contagiosa | 600 | .485 | Impetigo | | | herpetiformis | 10 | .009 | Ecthyma | 726 | .587 | Pemphigus | 183 | .148 | Ulcers | 3021 | 2.44 | | | | Class III. Hemorrhages. | | | Purpura: | 341 | .275 | a. simplex | 181 | .145 | b. hæmorrhagica | 49 | .039 | | | | Class IV. Hypertrophies. | | | 1. OF PIGMENT. | | | Lentigo | 127 | .103 | Chloasma | 560 | .452 | 2. OF EPIDERMAL AND | | | PAPILLARY LAYERS. | | | Keratosis: | 94 | .076 | a. pilaris | 103 | .083 | b. senilis | 68 | .055 | Molluscum epitheliale| 172 | .139 | Callositas | 110 | .090 | Clavus | 84 | .068 | Cornu cutaneum | 42 | .034 | Verruca | 1252 | 1.09 | Verruca necrogenica | 2 | .001 | Nævus pigmentosus | 88 | .064 | Xerosis | 100 | .080 | Ichthyosis | 309 | .249 | Onychauxis | 70 | .056 | Hypertrichosis | 515 | .416 | 3. OF CONNECTIVE | | | TISSUE. | | | Sclerema neonatorum | .... | .... | Scleroderma | 38 | 0.030 | Morpha | 39 | 0.031 | Elephantiasis | 57 | 0.046 | Rosacea: | 785 | 0.634 | a. erythematosa | 381 | 0.308 | b. hypertrophica | 58 | 0.047 | Frambsia | 22 | 0.018 | | | | Class V. Atrophies. | | | 1. OF PIGMENT. | | | Leucoderma | 77 | 0.062 | Albinismus | 9 | 0.008 | Vitiligo | 191 | 0.155 | Canities | 43 | 0.035 | 2. OF HAIR. | | | Alopecia | 926 | 0.749 | Alopecia furfuracea | 830 | 0.670 | Alopecia areata | 794 | 0.641 | Atrophia pilorum | | | propria | 23 | 0.019 | Trichorexis nodosa | 3 | 0.002 | 3. OF NAIL | 26 | 0.021 | Atrophia unguis | 19 | 0.015 | 4. OF CUTIS | 6 | 0.005 | Atrophia senilis | 15 | 0.013 | Atrophia maculosa et | | | striata | 23 | 0.019 | | | | Class VI. New Growths. | | | 1. OF CONNECTIVE | | | TISSUE. | 1 | 0.0008| Keloid | 152 | 0.124 | Cicatrix | 89 | 0.065 | Fibroma | 93 | 0.075 | Neuroma | 11 | 0.009 | Xanthoma | 69 | 0.056 | 2. OF MUSCULAR TISSUE. | | | Myoma | 1 | 0.0008| 3. OF VESSELS. | | | Angioma | 462 | 0.373 | Angioma pigmentosum | | | et atrophicum | 13 | 0.010 | Angioma cavernosum | 22 | 0.018 | Lymphangioma | 16 | .012 | 4. Mycosis fongoide | 1 | .0008| Rhinoscleroma | 3 | .002 | Lupus erythematosus | 477 | .385 | Lupus vulgaris | 536 | .433 | Scrofuloderma | 663 | .536 | Syphiloderma: | 13888 |11.22 | a. erythematosum | .... | .... | b. papulosum | .... | .... | c. pustulosum | .... | .... | d. tuberculosum | .... | .... | e. gummatosum | .... | .... | Lepra: | 24 | .020 | a. tuberosa | 7 | .005 | b. maculosa | 4 | .003 | c. anæsthetica | 6 | .004 | Carcinoma | 1068 | .863 | Sarcoma | 55 | .044 | | | | Class VII. Neuroses. | | | Hyperæsthesia: | 4 | .003 | a. Pruritus | 2716 | 2.12 | b. Dermatalgia | 11 | .009 | Anæsthesia | 22 | .018 | | | | Class VIII. Parasitic | | | Affections. | | | 1. VEGETABLE. | | | Tinea favosa | 354 | .286 | Tinea trichophytina: | 2289 | 1.85 | a. circinata | 705 | .569 | b. tonsurans | 675 | .545 | c. sycosis | 365 | .295 | Tinea versicolor | 1263 | 1.02 | 2. ANIMAL. | | | Scabies | 3192 | 2.58 | Pediculosis | | | capillitii | 2579 | 2.09 | Pediculosis corporis | 1704 | 1.38 | Pediculosis pubis | 436 | .352 | -------------------------+-------+-------+ Total 123746

#INDEX.#

Acarus folliculorum, 40 scabiei, 269

Achorion Schönleinii, 249

Acne, 115-126 artificialis, 120 atrophica, 120 cachecticorum, 120 frontalis, 129 hypertrophica, 120 indurata, 120 keloid, 135 lupoid, 129 necrotica, 129 papulosa, 120 punctata, 120 pustulosa, 120 rodens, 129 rosacea, 126-129, 198 sebacea, 33 tar, 120 urticata, 130 varioliformis, 129 vulgaris, 119

Acnitis, 130

Actinomycosis, 266

Addison's disease, pigmentation of the skin in, 149 keloid, 172

Ainhum, 212

Albinismus, 177

Albinos, 177

Alopecia, 181-183 areata, 183-186 circumscripta, 183 congenital, 181 furfuracea, 181 premature, 181 senile, 181

Anæsthesia, 244