Compare remedies: side-by-side differentials

Prescribing is comparison under time pressure — and most failed prescriptions trace to skipped differentials, not missing knowledge. This hub collects the remedy pairs students confuse most, each separated on thermal response, temperament, and concomitants. Master one pair per week and differentiation becomes reflex.

1. Allium cepa vs Euphrasia (the allergy mirror)

Allium burns the nose with bland eye watering, worse warm rooms; Euphrasia burns the eyes with bland nasal flow, worse sunlight and wind. Ask one question — “what burns, eyes or nose?” — and the pair resolves before the repertory opens. Both crave open air; discharge direction is the entire decision.

2. Bryonia vs Rhus tox (the motion fork)

Bryonia worsens with the slightest motion, demands absolute stillness, and thirsts largely; Rhus stiffens on first motion then limbers with continued movement, craves heat, and stays restless. Same aching flu or sprain, opposite motion signatures — the single highest-yield fork in acute work.

3. Nux vomica vs Lycopodium (the digestive divide)

Nux: irritable, sedentary, morning-worse, ineffectual urging, stimulant-sensitive. Lycopodium: 4–8 p.m. bloat, early satiety, right-sided, confident mask over private dread. Time of aggravation plus temperament separates them in minutes.

4. Sulphur vs Graphites (the skin fork)

Sulphur: hot, dry, burning, bed-warmth worse. Graphites: sticky honey-like oozing with cracks, chilly, obstinate. Touch the lesion and ask about bed warmth — eyes and thermostat decide.

5. Belladonna vs Aconite (the sudden-onset split)

Aconite follows chill and fright with restless thirst; Belladonna erupts in throbbing heat with dilated pupils and hypersensitivity. Onset story (exposure versus explosion) plus thirst and pupil signs separate them.

6. Pulsatilla vs Natrum muriaticum (the consolation polarity)

Pulsatilla: mild, weepy, thirstless, consolation-soothing, open-air craving. Natrum mur: silent grief, consolation-offending, sun-sensitive, mapped tongue. One consolation question splits the pair — ask it verbatim and record the exact response.

How to drill differentials

Take one pair weekly: write both portraits’ three-axis separations from memory, verify against two materia medicas, then find the pair in your logged cases and grade your past calls. Ten pairs a term builds the comparison muscle that repertories cannot supply.

Frequently asked questions

What if both seem to fit?

Then the case is under-observed: extend logging on modalities and concomitants until the axes diverge. Ties mean observe longer, not dose sooner.

Where do small remedies fit?

As tie-breakers and peculiar-match winners — three peculiar agreements beat ten loose general ones from any polychrest.

Original hub for ItsHomeopathy. Each pair links to full monographs in the remedy library.

All comparisons

• Sulphur vs Phosphorus: how to choose — Two burning constitutional remedies separated by inward absorption versus outward sympathy.
• Allium Cepa vs Euphrasia: the allergy mirror — Burning nose with bland eyes, or burning eyes with bland nose — one question decides.
• Bryonia vs Rhus Tox: the motion fork — Worse every motion versus stiff-first-then-better — the highest-yield fork in acute prescribing.
• Nux Vomica vs Lycopodium: the digestive divide — Irritable sedentary mornings versus 4–8 p.m. bloat with hidden insecurity.
• Sulphur vs Graphites: the skin fork — Hot dry burning versus sticky honey-like oozing — touch the lesion.
• Belladonna vs Aconite: the sudden-onset split — Throbbing heat with dilated pupils versus restless chill-fright.
• Pulsatilla vs Natrum Mur: the consolation polarity — Consolation-soothing versus consolation-offending grief.