Below are the main rubriks (i.e strongest indications or symptoms) of Merc Viv in traditional homeopathic usage, not approved by the FDA.
RECTUM, ANUS, STOOL
Stool acrid; bloody; knotty; containing pus; viscid.
Complaints before stool (a sick, painful, faint feeling comes on just before).
Complaints during stool; tenesmus; tenesmus without stool; diarrhoea with slime (Merc. is rarely indicated in these troubles where there is no slime.)
H. N. G.).
Constipation, with hard, tenacious and knotty faeces, which cannot be expelled without straining.
Faeces of small shape; ribbon-like.
Ineffectual, but frequent want to evacuate, esp. at night, and sometimes with tenesmus, protrusion of haemorrhoids, and nausea.
Loose and dysenteric evacuations, principally at night, with colic and violent cuttings, urgent want to evacuate, tenesmus and burning in anus, pyrosis, nausea and risings, anguish, heat or cold sweat on face, shivering and shuddering, exhaustion and trembling of all limbs.
Diarrhoea (preceded by colic), caused by the fresh air of evening.
Chilliness between the diarrhoeic stools.
During a diarrhoeic stool nausea and eructations.
Scanty evacuations of sanguineous mucus.
Evacuations which are mucous, or bilious, or putrid, or acid, or of a greenish or brownish colour, or reddish, or yellow, like Sulphur sulphur; or a greyish-white.
Faeces of consistence of pap, or frothy, or like hash.
Evacuation of corrosive and burning faecal matter.
Discharges of bloody mucus accompanied by colic and tenesmus; dysentery.
Discharge of blood, or of mucus, from rectum, even with evacuations that are not loose, and when not at stool, sometimes with tenesmus in anus.
Protrusion of haemorrhoids.
Ejection of ascarides and lumbrici.
Itching, shootings, and excoriation in anus.
After stool prolapsus ani; or when pressing and straining to stool.
Prolapsus recti, which, when it protrudes, appears black and bloody.
Evacuation of substances undigested, or black, and like pitch; blood and mucus, undigested, smelling sour, excoriating anus.≡ more ...