Below are the main rubriks (i.e strongest indications or symptoms) of Nitric Acid in traditional homeopathic usage, not approved by the FDA.
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RECTUM, ANUS, STOOL
Difficult and irregular evacuations.
Before stool colic; cutting constant pressing in rectum; constant but fruitless desire.
During stool nausea; tenesmus; spasm of anus; cutting in anus and rectum; acute pain in abdomen; sensation as if faeces remained and could not be expelled; splinter-like pains in rectum (with ineffectual urging); burning; tearing; palpitation of heart.
After stool-continued urging; exhaustion; irritation, anxiety, general uneasiness; anus sore, raw; cutting, straining, shooting in rectum, continuing for hours; prolapse with sensation of constriction in anus; stitching pains; haemorrhage; discharge of prostatic fluid.
Inability to evacuate faeces.
Constant ineffectual desire, not amel. by stool.
Faeces hard and dry.
Constipation with fissure symptoms bleeding, pain, distending stool.
Evacuations too frequent.
Urgent desire to evacuate.
Loose evacuations, sometimes mucous, or of a putrid smell.
Offensive and undigested evacuations.
Much discharge of blood after stool.
Sanguineous, dysenteric evacuations, with tenesmus.
Black, offensive blood; mucous pseudo-membranes, with straining and burning in rectum.
Colic, before stools.
After stools, excitability and dejection.
Burning pain, and itching in anus and rectum; with prolapse.
Sticking in rectum, and spasmodic contraction in anus during stool; fissures.
Oozing excoriation at anus.
Haemorrhoids, protruding, painless or burning.
Pain as if rectum would be torn asunder during a stool.
Swelling of haemorrhoidal tumours in anus, which bleed at every evacuation.
Moisture on anus.≡ more ...