back Mercurius Corrosivus

Synonym. - Mercurius Sublimatus Corrosivus. Bi-Chloride of Mercury. Mercuric Chloride. Common name. - Corrosive Sublimate. Preparation.- Corrosive sublimate is dissolved in Alcohol, one to ninety-nine, making the 2x dilution. Subsequent dilutions with Alcohol. Triturations from the Salt.


The general action of Merc. cor. is essentially the same as of other Mercurial preparations, yet it offers peculiarities of its own, which are found in no other. It is, as the name indicates, a highly corrosive, irritating poison, acting pre-eminently upon mucous membranes with destructive energy, producing an intensely acute inflammation, rapidly tending to softening and gangrenous disorganization. Its irritant influence also extends to the serous membranes, especially to the peritoneum. The most essential feature of Merc. cor. is the phagedenic tendency of all inflammatory conditions.


Mind.- Depressed; low spirited (Ign., Puls.). Ill-humored (Bry., Cham., Nux v.). Weakness of the intellect; stares at persons who talk to him, and does not understand them. Stupor and delirium. Coma (Bell., Op.).

Head.- Congestion to the head and face, with burning of the cheeks (Acon., Bell.). Violent frontal headache {Puls., Sang.). Pain, like a drawing in the periosteum of the skull.

Eyes. - Pupils contracted (Physos.) and insensible (Op.). Excessive photophobia and acrid lachrymation (Ars., Euphr., Led.). Kedness of the conjunctiva. Pains behind the eyeballs, as if they would be forced out. Lids everted, swollen, red, excoriated, burning, and smarting; edges covered with thick crusts or pustules (Merc, Sulph.). Tearing pain in bone and over left eye, near root of nose, and in other parts of bone.

Ears.- Violent pulsation in the ears.

Nose- Swelling and redness of the nose (Bell., Merc). Fluent coryza; rawness and smarting in the nostrils (Amm. mur., Cepa, Hydras.). Frequent nosebleed.

Face. - Countenance pale; anxious; as if exhausted. Face flushed; red; swollen; puffy. Lips blach; excessively swollen and tender; dry and cracked (Ars.); incrusted with a dry secretion. Stiffness of the jaws; soreness. oOEdematous swelling of the face; paleness; albuminuria.

Mouth.- Teeth loose; pain and fall out (Merc). Sordes. Soreness in teeth and gums; aching at night. Gums swollen and spongy; bleed easily; detached from teeth (Carb. v., Cistus, Merc., Nitr. ac.) ulcerated. Tongue coated with thick white mucus (Ant. crud.), or dry and red (Bell., Khus tox.); excessively swollen and inflamed (Bell.); red with black coat; covered with a grayish white crust; moist edges, red; pale dirty-yellow posteriorly and edges. Mouth inflamed; dry, burning and parched, as if scalded (Apis). Exudations and ulcers on the mucous membranes of mouth and throat. Accumulation of tenacious saliva, expectorated with difficulty (Kali bi.). Ptyalism. Salty (Ant. crud., Sulph.), or very bitter taste. Swallowing not so painful as depressing the tongue.

Throat. - Throat intensely inflamed and swollen, preventing sivalloiving and threatening suffocation (Bell.). Violent burning pain in throat and oesophagus (Ars., Canth., Caps.); aggravated by slightest external pressure. Dryness of fauces. Dark-red color. Constriction. Difficult painful swallowing, even of fluids. Uvula swollen, elongated (Merc.) dark-red. External throat and glands of throat enormously swollen. Spasms of oesophagus and stomach on attempting to swallow a drop of liquid. Burning in oesophagus.

Stomach. - Violent unquenchable thirst for cold water (Acon., Ars., Bry.). Drink frequently regurgitates through the nose. Painful retching and vomiting. Incessant green bilious vomiting (Iris). Streaks of blood in matter vomited. Burning in stomach. Great distension and sensitiveness in the epigastric region (Ars., Bell., Bry., Nux v., Lyc..) to the slightest touch or pressure.

Abdomen. - Stitches in the hepatic region (Acon., Ars., Calc. c, Chel., Cinch., Coni., Kali c, Merc, Natr mur., Nux v., Sep., Sulph.). Abdomen distended and very painful to least touch (Acon., Bell., Cupr.). Bruised pain in abdomen (Ferr., Merc), especially in coscal region and over transverse colon.

Stool and Anus.- Constant burning in rectum and anus (Ars., Canth.); during stool. Corrosive ichor oozes from anus, excoriating the parts (Carb. v.). Very distressing, persistent tenesmus and cutting colicky pains; after stool burning and tenesmus of rectum and bladder; stools frequent, scanty, nothing but mucus tinged with blood (Canth.). Stool pasty, dark-green, bilious, blackish, offensive (Ars.). Constipation; tenacious faeces.

Urinary Organs. - Tenesmus of the bladder (Canth., Caps., Colch.); urine suppressed (Acon., Hyos., Stram.). Fre- quent urination; passed in drops with much pain (Acon., Bell., Canth.). Urine scanty, bloody; albuminous (Osm., Phos., Fhyt., Plumb.) containing filaments, flocks or dark flesh-like pieces of mucus; epithelial cells of the tubuli uriniferi in a state of fatty degeneration. Gonorrhoea, at first thin, afterward thick, greenish, worse at night (Merc), burning, smarting urination (Can. sat.).

Male Organs.- Penis and testes enormously swollen (Ars.). oChancres assuming a phagedenic appearance, and secreting a thin, ichorous pus.

Female Organs. - Intense inflammation of the vulva. Painful glandular swellings about the nipple.

Respiratory Organs. - Hoarseness or aphonia, burning, cutting and stinging in the trachea; tightness across the chest; influenza (Osm.). Difficult respiration. Spasm of the glottis when swallowing. Cough, with expectoration of mucus tinged with blood. Stitches shoot through the thorax (right side) .

Pulse. - Small, intermittent, irregular (Kali c, Natr. mur.); rapid.

Limbs.- Lassitude in all the limbs; trembling. Stitches in hipjoint, better on motion.

Generalities. - Lies on the bach with knees bent up. Great debility; trembling (Calc. c, Cinch.). Convulsive twitchings and contractions (Cic, Ign.). Glandular swellings Baryt., c, Calc. c, Graph., Iod.). Drawing pains in periosteum (Nitr. ac). General anasarca (Ars., Apis, Apoc).

Sleep.- Frequent yawning and stretching. Sleepless at night; starting from sleep (Ars., Bell., Hyos., Strain.).

Fever. - Chilliness from slightest exertion (Calc. c, Hep. s., Lyc., Phos., Sil.). Surface cold and covered with profuse perspiration, especially on forehead ( Camph., Verat. alb.). Great heat of the skin (Acon., Ars., Bell., Bry.); at night with anxiety, preventing rest. Clammy, cold perspiration (Ars., Camph., Merc); offensive, toward morning.

Aggravation. - In evening and at night; in open air; from fat food; from motion.

Amelioration.- While at rest.

Compare.- Acon., Ars., Bell., Bry., Canth., Cepa, Lach., Natr. mur., Nitr. ac, Sulph.

Antidotes.- Hep. s., Nitr. ac, Sil. To large doses: white of an egg.


Merc cor. is mostly used in the treatment of acute inflammations, especially of mucous membranes, characterized by great violence. It is invaluable in inflammatory conditions of the eye and lids. Ophthalmia, catarrhal, scrofulous, syphilitic or gonorrhoeal, characterized by intense inflammation and swelling, extreme pain and photophobia and acrid lachrymation. Ophthalmia neonatorum, with acrid discharges; caused by syphilitic or gonorrhoeal leucorrhoea. Blepharitis scrofulosa. Phlyctenular; deep ulcers on the cornea. Iritis, especially if syphilitic; pains severe; worse at night. Keratoiritis. Episcleritis. Retinitis albumin urica; also with tearing in the eyebrow; bones tender. Retinitis hemorrhagica. Choroiditis. Sclerotitis. Hypopyon occurring in abscess of cornea or iritis. Fluent coryza with excessive rawness, smarting and burning, acrid mucous discharges, nose swollen and very sore. Ozoena, gluey discharge; drying up in posterior nares; much burning; ulceration; perforation of septum. Facial neuralgia. Inflammation of the gums, purple color, spongy, ulcerated, gangrenous tendency. Violent glossitis, tongue excessively swollen, so that it cannot be protruded. Stomatitis with intense burning pain. Pharyngitis, intense, throat dry, swollen, dark red, violent burning pains, difficult swallowing, constriction, suffocation. Oesophagitis, burning pains. Diphtheria, intense, rapid, destructive. Inflammation of uvula and arch of palate, swollen, dark-red, burning. Chronic dyspepsia, with distension and soreness of epigastrium, burning pains. Hepatitis. Useful in various forms of partial peritonitis, with tendency to the formation of an abscess, sore, burning pains, etc. Colonitis, especially of transverse and descending colon, burning pains. Typhlitis. Proctitis. Periproctitis, abscess about to form. Merc. cor. is the remedy oftenest indicated and most useful in what might be termed a typical dysentery, characterized by scanty stools of pure mucus tinged or streaked with blood, and extreme persistent tenesmus and burning pains, and frequently also great tenesmus of the bladder. The drug may also be useful when the stools are of a different character, as noted in the pathogenesis, if the violent tenesmus is present, which is the chief indication. A very useful remedy in severe cases of cystitis with violent tenesmus and burning, resembling Canth. Acute nephritis, urine scanty and albuminous; with violent cystic symptoms. Albuminuria; after diphtheria or in JBright's disease; acute early stages. Gonorrhoea, with thick, greenish discharge, and intolerable burning and smarting during urination. Venereal ulcers in both sexes, assuming a phagedenic appearance, and secreting a thin, ichorous pus. Intense inflammation of the vulva, with violent burning, destructive tendency. Pelvic peritonitis, especially pelvic cellulitis, abscess about to form. Avery useful remedy in catarrhal hoarseness and aphonia. Violent influenza, with burning, stinging, cutting pains in larynx and trachea, tightness across the chest. Bronchitis. General dropsy especially from kidney disease. Glandular swellings. May be useful in diseases of bones, characterized by rapid destruction of tissue forming abscesses, with the usual symptoms indicating the drug. Condylomata. Ulcers which perforate and become phagedenic.

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