Crotalus horridus
as H.C. Allen recorded it in Keynotes and Characteristics with Comparisons of Some of the Leading Remedies of the Materia Medica, 1899
Rattlesnake
This is one author on one remedy. The few symptoms that, when genuinely present, point at one remedy and not its neighbours. Read Crotalus horridus in every book at once →
Keynotes
Crotalus horridus
Poison of Rattlesnake. Crotalidce.
Is indicated in strumous debilitated, haemorrhagic, broken-down constitutions; during zymotic diseases; in inebriates; tendency to carbuncles or blood boils ( Anthr.).
Diseases caused by a previous low state of the system; low septic typhoid or malarial fever; chronic alcoholism ; exhausted vital force ; genuine collapse.
Apoplexy; apoplectic convulsions in inebriates, haemorrhagic or broken down constitutions.
Haemorrhagic diathesis; blood flows from eyes, ears, nose, and every orifice of the body; bloody sweat.
Yellow color of conjunctiva; clears up vision after keratitis, or kerato-iritis.
Malignant jaundice; haematic rather than hepatic.
Purpura hsemorrhagica ; comes on suddenly from all orifices, skin, nails, gums.
Tongue fiery red, smooth and polished (Pyr.); intensely swollen.
Malignant diphtheria or scarlatina; oedema or gangrene of fauces or tonsils; pain < from empty swallowing; if vomiting or diarrhoea come on.
Prostration of vital force ; pulse scarcely felt ; bloodpoisoning (Pyr.).
Vomiting: bilious, with anxiety and weak pulse; every month after menstruation; cannot lie on r. side or back without instantly producing dark, green vomiting; black or coffee grounds, of yellow fever.
Diarrhoea; stools black, thin, like coffee-grounds; offensive; from noxious effluvia or septic matters in food or drinks; from “high game” (Pyr.); during yellow fever, cholera, typhoid, typhus.
Intestinal haemorrhage when occurring in typical septic, or zymotic disease ; blood dark, fluid, noncoagulable.
Dissecting wounds ; insect stings ; bad effects of vaccination.
Vicarious menstruation; in debilitated constitutions (Dig., Phos.).
Menopause; intense flushings and drenching perspirations; faintness and sinking at stomach; prolonged metrorrhagia, dark, fluid, offensive; profound anaemia.
Malignant diseases of uterus, great tendency to hsemorrhage, blood dark, fluid, offensive.
In Each, skin cold and clammy; Crot. cold and dry ; Elaps, affections of r. lung, expectoration of black blood.
What the other books say about Crotalus horridus
The same remedy read by a different author. They disagree, and the disagreements are where the remedy becomes recognisable.
- Crotalus horridus in Boericke — The concise clinical Materia Medica that most Indian colleges teach from, in full.
- Crotalus horridus in Kent — Kent teaching a class, one remedy at a time — fewer remedies, far more on each.
- Crotalus horridus in Boger — A compressed key — the generals and the characteristic modalities, with very little narrative.
Search every book at once, take rubrics from Kent and Bönninghausen, and practise on a patient who answers back — free account.
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Cite this page. H.C. Allen. Keynotes and Characteristics with Comparisons of Some of the Leading Remedies of the Materia Medica. 3rd edition (1910). Philadelphia: Boericke & Tafel. Crotalus horridus — Keynotes, pp. 107–109. HomeopathyWorld, https://homeopathyworld.in/materia-medica/books/allen/crotalus-horridus. Published 1910: public domain in the US (before 1931) and in India (author died 1909). Replaces B. Jain's 2005 "rearranged and classified" edition (© the publisher), per the owner's decision of 13 Sep 2026. Reproduced as the author wrote it; a historical reference for students and practitioners, not medical advice.