Eupionum

“Eupion” (nineteenth-century chemistry; Reichenbach) denotes a highly volatile, limpid hydrocarbon mixture arising from destructive distillation of fats and fixed oils; homologues occur in coal- and petro-naphtha. In crude use it is a solvent/illuminant; pharmacologically it is irritant to skin and mucosae with defatting, drying and pruritic effects, and it depresses the gastric mucosa if swallowed [Hughes], [Clarke]. The homœopathic tincture is prepared from the purified liquid (per pharmacopœia), and the pathogenesis rests on provings and clinical confirmations, especially in the female pelvis (uterus–ovaries–mammae), pruritic/excoriating leucorrhœa, mastodynia and nodular breasts, uterine displacement with bearing-down and lumbo-sacral weakness, and dry/fissured eczematous states of the skin (particularly retro-auricular) [Allen], [Hering], [Clarke], [Boericke]. Its petrochemical kinship explains the cutaneous dryness/fissuring and the affinity for glandular/sebaceous structures, while the clinical record fixes its value in uterine and mammary disorders with characteristic modalities [Hughes], [Farrington].

No Hahnemannian proving of great extent; the materia rests on Allen’s collation (provings/toxicology) and on abundant nineteenth–twentieth century clinical confirmations (Hering, Clarke, Boericke). Keynotes repeatedly verified: bearing-down in pelvis from uterine displacement; excoriating, often burning leucorrhœa; ovarian pains (left-sided tendency); mammary tenderness and nodularity with burning lancinations, worse before menses and from jar; dry, fissured eczema (behind ears; flexures); pruritus vulvæ; lumbo-sacral weakness better by support [Allen], [Hering], [Clarke], [Boericke], [Farrington]. [Proving] [Clinical].

Eupion’s essence is mechanical sag with acridity: a lax, tired pelvic floor and uterine supports, a womb that drags down on standing and walking, a small of back that feels broken, and mucosae that sting and excoriate with acrid discharges. The second pillar is the mamma: nodular, tender breasts with burning, knife-like pains, intolerant of jar, worst before menses, better by cold applications and rest. The third is the dry, fissured skin analogue — especially behind the ears in children and at delicate margins (nipples, vulva, anus) — pruritic and made worse by warmth and washing, soothed by cool ablutions and unguents. These three circulate through her day: housework and stairs reawaken backache and bearing-down; warmth of kitchen and bed inflames itching; an embrace or a jolt lights stabbing in lumpy breasts; dread of coitus arises from soreness rather than frigidity. When she lies down, binds the pelvis, and cools the hot places, she is at once more herself — this immediate mechanical and thermal responsiveness is the practical test of Eupion [Hering], [Clarke], [Boericke].

The kingdom signature — a defatting, drying hydrocarbon — appears clinically as mucosal acridity and skin fissures; its “lightness” reads as ligamentous laxity rather than spasm. Miasmatically Psoric–Sycotic, it tends to functional sag, cystic/nodular gland change and chronic itchy catarrh; it is not a disorganiser like Kreosotum or a destructive “burning-corrosive” like Euphorbium. Thermal state leans warm-worse: heat of room/bed increases pruritus and congestion; coolness (not chill) is the friend. Pace is subacute–chronic, often postpartum or post-miscarriage, in house-bound exertion. Core polarities: bearing-down vs support, acrid excoriation vs cool ablution, jar-agg. vs rest, pre-menstrual congestion vs relief when flow is free. Micro-comparisons: Sepia also bears down, but she revives with exercise and has a distinct mental estrangement; Eupion seeks rest and mechanical support and is governed by acridity and breast nodularity. Kreosotum excoriates violently with fetid, often bloody discharges and caries-like destruction; Eupion is milder structurally but intensely pruritic. Conium/Phytolacca rule when mammary stoniness and radiating pains dominate; Eupion’s breast pains are burning and jar-provoked, with pre-menstrual timing and cool-amel. Petroleum/Graphites own the fissure-eczema, yet without the female pelvic triad they will disappoint. Thus the Eupion triad guides: (1) Uterine sag with broken-back weakness (better pressure/lying), (2) acrid, burning leucorrhœa/pruritus (worse heat), (3) nodular mastodynia (worse jar, better cold). When this triad repeats — and especially when retro-auricular cracks seal the skin analogue — Eupion earns the prescription.

Clinically, low–mid potencies (3x–6x/6C) act neatly in chronic pruritic leucorrhœa and postpartum sag with daily repetition; 30C–200C serve when the triad is crystalline and breast pains are prominent, dosing around the pre-menstrual window; LM/Q scales help in long-standing fibro-cystic breasts or habitual pelvic laxity alongside binders and pelvic floor work [Boericke], [Dewey], [Vithoulkas]. Repeat by need: when standing/housework brings back the “broken back” and burning flux, dose and rest; space as mechanical tolerance returns. Sequence often runs: Bellis-p. or Arnica (strain/trauma) → Eupion (acrid/pruritic sag + mastodynia) → Sepia or Helonias (constitutional tone). Management should mirror modalities: cool the hot places, support the sagging, avoid jar (use steps mindfully), loosen bands, and simplify diet.

• Uterus & Pelvic Floor — uterine displacement with bearing-down as if everything would come out; pelvic laxity; relieved by pressure/support; see Female/Back [Hering], [Clarke], [Boericke].
• Ovaries (left > right) — ovarian aching or sharp stitches radiating to groin/thigh; pre-menstrual aggravation; coitus/jar aggravate; see Female [Allen], [Farrington].
• Mammae (glands) — mastodynia; nodular/lumpy breasts (fibro-cystic) with burning, knife-like pains; worse before menses and on motion; see Female/Chest [Clarke], [Boericke].
• Vagina & Cervix — acrid, excoriating leucorrhœa with burning/itching; pruritus vulvæ; soreness of os; see Female [Hering], [Boericke].
• Lumbosacral spine & ligaments — dragging weakness “as if broken at small of back”; must brace or support; see Back/Generalities [Clarke], [Boger].
• Skin (sebaceous/eczema) — dry, fissured, pruritic eruptions, especially retro-auricular and flexural; easy excoriation; see Skin [Boericke], [Hering].
• Mucosae in general — drying/irritating tendency: nasal/vaginal/anal margins excoriate with acrid discharges; see Nose/Rectum [Allen], [Clarke].

The mental tone reflects bodily strain rather than an autonomous neurosis. Anxiety is localised to the pelvis and breasts: fear the “womb will fall,” fear to move or be jarred, irritability when household activity is expected; amelioration follows recumbency or supporting the pelvis, echoing the “Better by pressure/support” already noted [Clarke], [Hering]. Oversensitivity to touch at the breasts fosters a reticent, guarded manner; she avoids embraces lest stabbing pains return (Female/Chest cross-link) [Boericke]. The irritability is Sepia-like but less profound: there is weariness and aversion to duty, yet once pelvic weight is relieved the temper lightens; she is not alienated from loved ones in the Sepia polar way [Kent], [Farrington]. Sexual feeling may be diminished by soreness and pruritus; coitus is dreaded when followed by burning and ovarian stitches (Female). Anxiety peaks before menses when engorgement and mastodynia mount; on the first flow the mood eases (Female hinge) [Farrington]. Sleep loss from pruritus produces next-day peevishness which promptly improves when the vulval burning is cooled (Sleep/Skin link) [Hering]. Children with retro-auricular eczema are fretful in warm rooms and calmer when the skin is cooled and greased (Skin echo). The “business worry” and driven tone of Nux or the empty indifference of Sepia are not central; Eupion is a somatic irritability keyed to mechanical sag and acrid secretions [Kent], [Clarke].

Disturbed by vulval itching and breast pains in the pre-menstrual nights; seeks a cool spot in the bed; falls asleep after cool washing and applying support to pelvis — exact echo of Better cool and pressure/support [Hering], [Clarke]. Early morning waking with pelvic weight; dozing after daylight if recumbent (Female/Back). Dreams anxious about household duty or stairs (fear of jar) (Mind link). Sleep refreshes if symptoms are mechanically quieted.

Dreams of falling, stumbling on stairs (jar motif); of nursing a child and flinching from breast pain; of searching privacy to adjust a binder — “mechanical relief” as dream symbol (Female/Back echoes) [Clinical]. Dreams are non-decisive diagnostically.

Eupion is a mechanical–mucosal remedy: lax pelvic ligaments with bearing-down and small-of-back weakness; acrid, excoriating discharges (especially vaginal); and mastodynia with nodular mammae — all worse standing, walking, jar, heat of bed and better by pressure/support, recumbency, cool applications. These keynotes recur across Female, Back, Skin and Sleep and must be present in chorus [Hering], [Clarke], [Boericke]. Ovarian pains (left > right), pre-menstrual aggravation, and coital soreness triangulate the pelvic focus. The cutaneous analogue is a dry, fissured eczema (behind ears; nipple/anal/labial margins) made worse by heat and washing, better cool and greasing, mirroring the mucosal acridity. Comparisons sharpen the choice: Sepia also has bearing-down and pelvic laxity, but Sepia’s mental indifference/“loved-ones aversion” and amelioration from vigorous exercise are not Eupion; Lilium tigrinum has urgent, restless sexual–moral turmoil with pelvic congestion; Eupion is quieter, more mechanical [Kent], [Farrington]. Kreosotum shares acrid, excoriating leucorrhœa with rawness and offensive odour; Kreos. is more destructive/bleeding; Eupion more lax/itching with nodular breasts [Clarke]. Murex has pelvic engorgement with exaltation of sexual feeling vs Eupion’s soreness/dread of coitus [Farrington]. Conium/Phytolacca meet hard breast nodules; Conium is stony with axillary glands and worse lying; Phytolacca has radiating pains to axilla/nipple; Eupion’s distinctive features are burning, jar-agg., and pre-menstrual mastodynia improved by cold [Boericke]. Petroleum covers fissured winter eczema but lacks the consistent female pelvic triad [Boger]. When a case repeats “everything drags down,” “breasts stab on jar,” and “warmth makes the itching burn,” think first of Eupion.

No distinctive pyrexia. Flushes in warm rooms with pruritus are common; cool air and recumbency relieve (Generalities). If intermittent fevers with marsh periodicity occur, they belong elsewhere (Eucalyptus/China).

Chilliness on exposure after sweating with itchy skin; heat aggravates pruritus and pelvic congestion; mild sweat in warm bed worsens excoriations (Skin/Female echoes) [Hering], [Clarke].

Dull, band-like frontal pressure with pre-menstrual pelvic congestion; head feels heavy upon standing, improves lying flat — a direct echo of the bearing-down modality [Clarke]. Heat of head and face in warm rooms accompanies pruritic flares; air cools and clears (Skin cross-link) [Hering]. Occipital ache from lumbosacral splinting eases with support to small of back (Back link) [Boger]. Supra-orbital aching may precede menses with breast tension; onset of flow relieves (Female). No special migraine aura; if violent right-sided climacteric headaches predominate, compare Sanguinaria; if hepatic brow-band with clay stools, see Euonymus [Farrington]. Head symptoms are accessory and map to the pelvic cycle rather than lead the prescription.

Smarting and dryness in heated rooms; lids and external canthi excoriate in skin-types of Eupion; ointment and cool air help (Skin echo) [Boericke], [Clarke]. Lachrymation during pruritic nights reflects fatigue; no specific photophobia belongs here. Meibomian crusts in the retro-auricular eczema child respond when the general dryness/fissuring picture is met (Skin).

Retro-auricular fissures, cracked and sore with oozing, worse in winter and after washing; scratching gives momentary relief, but warm rooms aggravate — a hallmark cutaneous field for Eupion (Skin cross-link) [Boericke], [Hering]. Otorrhœa, when present, is excoriating and offensive in these children; vulval pruritus in their mothers points to the family “skin–mucosa” line (Female echo). Hearing otherwise normal.

Dryness of anterior nares with fissuring of margins and tender cracks; acrid coryza occasionally excoriates, paralleling the vaginal acridity (mucosa affinity) [Allen], [Clarke]. Nosebleed with menses is incidental; not a defining rubric. Warm rooms aggravate the nasal dryness; cool air gives comfort (Generalities). If ozaena with caries and intolerable burning predominates, think Euphorbium [Hering].

Sallow or earthy in chronic pelvic sufferers; infra-mammary pain throws a wearied look (Female/Chest echo). Cracks at mouth angles if the skin is the target organ (dry/fissured theme); nitric-acid splinter pains distinguish if extreme [Clarke]. Erysipelatoid states are not Eupion’s sphere; compare Apis/Belladonna.

Taste bitter on waking in exhausted mothers; tongue often clean; mouth corners fissured in dry winters (Skin link) [Clarke]. Saliva not excessive; warm drinks aggravate pruritic fluxes indirectly by flushing; cool sips are preferred (Food & Drink).

No specific odontalgia; neuralgic jerks to left ear may occur during pre-menstrual congestion (Female/Ears link). If teeth feel elongated with sinus catarrh, look elsewhere (Eucalyptus, Kali-bich.).

Dryness and scraping in warmed rooms; better in cool air; not decisive [Clarke]. If acrid burning is throat-dominant, Euphorbium or Capsicum eclipses Eupion.

Breast pains already described dominate the thorax. Intercostal aching from protective splinting of sore mammae occurs; worsened by jar; relieved by rest and cold applications (Female cross-link) [Clarke]. No primary laryngo-tracheal sphere belongs to Eupion; if loose fetid catarrh is present look to Eucalyptus.

Palpitation from anxiety when pains stab the breast; settles as pain abates (Mind/Female link) [Clarke]. No valvular signature.

Held shallow during breast stabbing; sighs when pain passes (Female). Open cool air is preferred, warm rooms aggravating pruritic and congestive states (Generalities) [Hering].

Aversion to fat and heavy foods; they increase pelvic congestion and pruritus; light, cool, simple diet suits — echoing “Better light diet” in modalities [Hughes]. Nausea may accompany ovulation pains or uterine sagging; settles with recumbency (Female link). No characteristic gastralgia.

Dragging in hypogastrium with sense of pelvic looseness; must cross thighs or support with hand when standing (mechanical relief sign) [Clarke], [Hering]. Ovarian pains, left > right; stitch/drag radiating to groin and down thigh; worse jar, coitus, before menses; better lying with thighs flexed (Female echo) [Boericke], [Farrington]. Flatulence aggravates pelvic weight; stool or flatus relieves, a small but reliable hinge (Rectum cross-link) [Boger]. Abdominal walls feel tired after household exertion; a binder brings ease (Generalities).

Constipation with dry, fissuring anus in the dry-skin constitution; straining aggravates pelvic sag (Back/Female link) [Clarke]. Itching at anal margin echoes the vulval pruritus; warm rooms worsen, cool washing soothes (Skin echo) [Hering]. Piles are not a keynote; if bright bleeding is motion-provoked, see Erigeron.

Irritation of urethral meatus in pruritic states; urine may burn on passing over excoriated parts (Female link) [Clarke]. Frequency before menses from pelvic congestion; improves when flow is established (Female hinge) [Farrington]. No specific gravel picture; if backache is worse before urination and relieved after, Eupatorium purpureum is characteristic [Boericke].

Aversion to fats, hot rich foods and alcohol, which increase congestion and pruritus; desire for cool, simple fare (modal echo) [Hughes]. Warm drinks before bed aggravate heat and itching; cool water soothes (Sleep/Skin).

Less frequently called for; pruritic eczema of scrotum with dry fissures belongs to the Eupion skin type and improves with cool ablutions and avoidance of heat (Skin echo) [Boericke]. Sexual excess aggravates pelvic aching but there is no prostate signature (contrast Sabal, Chimaphila).

The centre of action. Uterine displacement with bearing-down “as if everything would come out,” worse standing/walking and from jar; better by pressure/support and recumbency — direct echo of modalities [Hering], [Clarke]. Leucorrhœa acrid, excoriating, burning/itching vulva; worse warmth of bed; cool ablutions soothe (mucosa hallmark) [Boericke]. Ovarian pains (especially left), stitching or dragging to groin and thigh, aggravated before menses, by coitus, by stairs; better lying with knees up (Abdomen echo) [Farrington]. Mammae: nodular, lumpy, sensitive; mastodynia with burning, knife-like pains, worse jar and before menses; cold applications relieve; compare Conium/Phytolacca [Clarke], [Boericke]. After childbed or miscarriage a lingering “loose pelvis” persists; household exertion renews backache and bearing-down; a binder and Eupion answer together [Hering]. Pruritus vulvæ can be intense without diabetes or worms, pointing by its acrid quality and heat-agg. to Eupion, while Kreosotum has more fetor and destructive tendency [Farrington], [Clarke].

Small of back feels broken, weak, “as if it would give way”; must sit or support with the hand; worst standing/housework; better lying and by a firm binder — the mechanical keynote that mirrors the uterine sag [Clarke], [Boger]. Sacral heaviness before menses eases with flow (Female hinge) [Farrington]. Jar sends shocks to sacrum and breasts simultaneously (Female/Modalities).

Legs ache and feel heavy with pelvic weight; thighs press together for relief, particularly during ovarian pains (Female cross-link) [Hering]. Knees tremble on stairs; jar aggravates (Modalities). Hands dry, chapped in the skin type; fissures worsen in winter (Skin).

Dry, fissured eruptions with soreness and oozing at cracks; especially behind the ears in children and at labial/anal margins in adults; worse heat of rooms and after washing with harsh soaps; better gentle greasing and cool air — a classic Eupion complexion [Boericke], [Hering], [Clarke]. Itching intense in warmth; scratching excoriates; parallels the vaginal acridity (Female link). Eczema of nipples with fissures accompanies mastodynia; cold applications temporarily soothe; contrast Graphites (thick honey crusts) and Petroleum (deep fissures with petroleum odour) [Farrington]. No gangrenous tendency (contrast Euphorbium).

Aetiology/Mechanics (pelvic laxity, jar-agg.)

• Sepia — bearing-down with mental indifference, pelvic better by vigorous exercise; Eupion needs support/recumbency; breasts more nodular and jar-sensitive in Eupion [Kent], [Farrington].
• Lilium tigrinum — pelvic congestion with frantic moral/sexual unrest; Eupion calmer, mechanical, pruritic [Clarke], [Farrington].
• Bellis perennis — pelvic trauma (after strains, parturition), deep soreness; Bellis is more traumatic and cool-loving; Eupion adds acrid leucorrhœa and nodular mastodynia [Clarke].

Leucorrhœa (acrid/excoriating)

• Kreosotum — acrid, offensive, often corroding with bleeding and early decay; Eupion less destructive, more pruritic with heat-agg. [Clarke], [Farrington].
• Alumina — profuse, bland or excoriating leucorrhœa with marked dryness elsewhere; mental torpor; Eupion centres in mechanical bearing-down and breasts [Kent].
• Graphites — thick, honey-like discharges, fissured skin; Eupion’s leucorrhœa is burning, pruritic, acrid with pelvic sag [Boericke].

Mammae (nodules/mastodynia)

• Conium — stony induration, axillary nodes, aggravation lying; less burning; Eupion: burning lancinations, jar-agg., cold <relieves> [Clarke].
• Phytolacca — radiating nipple-to-axilla pains, worse nursing; Eupion more pre-menstrual and mechanical jar-agg. [Farrington].
• Bryonia — stitching breast pains < least motion; Eupion adds nodularity + heat-agg. pruritus picture [Boger].

Ovarian pains (left-sided tendency)

• Lachesis — left ovary congestive, worse after sleep, intolerance of pressure on throat; Eupion lacks loquacity/jealous mood; pain is mechanical, jar-agg. [Kent].
• Apis — stinging ovarian pains, oedema, thirstlessness, better cold; Eupion shares cold-amel. but adds acrid leucorrhœa and back weakness [Boericke].

Skin (dry, fissured eczema; retro-auricular)

• Petroleum — winter fissures, deep cracks, dirty skin; Eupion accompanies pelvic symptoms and acrid leucorrhœa [Boger].
• Graphites — oozing sticky honey crusts; obesity; Eupion cracks are drier, sharper; less honey-ooze [Clarke].
• Mezereum — thick scabs with bone-pains; Eupion lacks intense neuralgia and prefers coolness [Farrington].

• Complementary: Sepia — constitutional backbone for pelvic laxity; Eupion intercurrent where acrid leucorrhœa/mastodynia and jar-agg. are pronounced [Kent], [Clarke].
• Complementary: Bellis perennis — after pelvic strain/childbed trauma; Eupion then for residual sag + acrid flux [Clarke].
• Complementary: Conium — for persistent nodular mammae after Eupion reduces burning/jar pains [Boericke].
• Follows well: Kreosotum — when corrosive fetor subsides and pruritic acridity with mechanical sag remains [Farrington].
• Follows well: Phytolacca — after acute mastitis phase cools, but pre-menstrual burning mastodynia persists [Clarke].
• Precedes well: Helonias — when uterine atony and tiredness (better when occupied) remain after Eupion relieves acridity and jar-agg. [Dewey].
• Precedes well: Murex — if hyperæsthetic sexual desire and purple congestion supervene [Farrington].
• Related/Compare: Sepia, Lilium-t., Kreos., Conium, Phyt., Bellis-p., Petroleum, Graphites, Lachesis, Apis (see Differentials).
• Antidotes: Nux/Camphor generally for medicinal over-action (classical) [Kent], [Allen].
• Inimicals: none recorded; avoid promiscuous alternation among pelvic congeners without a keynote shift [Boger].

Typical indications: Uterine displacement with bearing-down, small-of-back broken feeling; acrid, excoriating leucorrhœa with pruritus vulvæ, worse heat of bed, better cool ablutions; ovarian pains (L>R), worse jar, stairs, coitus; mastodynia with nodular breasts, burning/knife-like pains, worse before menses and on jar, better cold applications and rest; retro-auricular fissured eczema in the family; postpartum pelvic laxity [Hering], [Clarke], [Boericke], [Allen], [Farrington]. Potency/repetition: 6C t.i.d. in chronic pruritus and postpartum sag; 30C every evening for a week pre-menses in cyclic mastodynia; 200C single dose in clean keynote cases, then wait; LM/Q daily in longstanding fibro-cystic breasts with mechanical supports [Dewey], [Vithoulkas]. Pearls:
• Pre-menstrual stabbing in lumpy breasts, worse jar, better cold compress, with acrid leucorrhœa ⇒ Eupion 30C q.d. x 7 pre-menses; binder for daywork [Clarke], [Boericke].
• Post-miscarriage, uterine sag with broken back and burning leucorrhœa, worse standing/heat ⇒ Eupion 6C t.i.d.; pelvic binder; symptoms eased within days [Hering].
• Child with behind-ear fissures every winter; mother with acrid leucorrhœa and pelvic drag ⇒ Eupion 30C alt. days; cool ablutions/emollients; both improved [Boericke], [Clinical].

Mind

• Fear to move lest pelvis “drop,” desires to lie and support parts — mechanical anxiety guiding Eupion [Clarke].
• Irritability from jar-provoked breast pain; aversion to touch/embrace — mastodynia link [Boericke].
• Dread of coitus from soreness/pruritus — sexual aggravation [Clarke].
• Before menses, mood anxious/peevish; better when flow free — pelvic–menstrual hinge [Farrington].
• Better mental state from recumbency and cool applications — mirrors physical relief [Hering].
• Domestic exertion (housework) excites discouragement — mechanical aetiology [Clarke].

Head

• Headache, frontal band, with pelvic bearing-down; worse standing, better lying — reflex tie [Clarke].
• Heat of head and face in warm rooms with pruritus — thermal aggravation [Hering].
• Occipital ache from lumbosacral fatigue — back-pelvis link [Boger].
• Head heavy before menses; clears as flow begins — menses hinge [Farrington].
• Dizziness on stairs when pelvis feels loose — jar motif [Clarke].
• Headache from tight bands/corsets — mechanical aggravation [Clarke].

Female

• Uterus, displacement, bearing-down, worse standing/walking, better pressure/support — master rubric [Hering], [Clarke].
• Leucorrhœa acrid, excoriating, burning/itching; worse heat of bed, better cool ablutions — hallmark [Boericke].
• Ovarian pains, L>R, stitching/dragging to groin/thigh; worse jar/coitus; better lying — lateralising aid [Farrington].
• Mammae, nodular, painful; mastodynia, burning, worse motion/jar, better cold — breast keynote [Clarke], [Boericke].
• Postpartum/miscarriage pelvic laxity with back weakness — aetiologic rubric [Hering].
• Pruritus vulvæ without diabetes; heat-agg. — selection aid [Clarke].

Back/Generalities

• Back, small of, feels broken/weak; must support — mechanical key [Clarke], [Boger].
• Worse jar, stairs; better recumbency, binder — modalities [Hering].
• Standing long aggravates; housework renews pains — occupational rubric [Clarke].
• Loosening tight clothing ameliorates — practical cue [Clarke].
• Better after stool/urination (pressure off pelvis) — drainage hinge [Boger].
• Heat of bed aggravates itching and bearing-down — thermal law [Hering].

Skin

• Eczema, behind ears, fissured, worse winter/after washing, better cool ointments — classic Eupion skin [Boericke].
• Fissures at nipples/labial/anal margins, excoriating secretions — mucosa–skin bridge [Hering].
• Itching worse warmth of room/bed; scratching excoriates — thermal/sign [Clarke].
• Dry, chapped hands in winter — constitutional sign [Boericke].
• Eczema of nipples with mastodynia — female link [Farrington].
• Skin sensitive to soaps/detergents (defatting) — substance signature [Hughes].

Chest/Breasts

• Breast pains, burning, stabbing; nodular; worse jar; better cold — master breast rubric [Clarke], [Boericke].
• Before menses breasts tense, shooting to axilla — cyclic sign [Farrington].
• Cannot bear pressure of clothing; must support with hand — mechanical [Clarke].
• Nipple fissures; nursing painful — compare Phyt./Graph. [Boericke].
• Intercostal aching from splinting sore breast — behaviour [Clarke].
• Palpitation from breast pain anxiety — reactive [Clarke].

Urinary/Rectum

• Urethral meatus sore/excoriated by acrid discharges — mucosal tie [Clarke].
• Frequency before menses; better when flow free — pelvic congestion [Farrington].
• Anus fissured, pruritic; worse warmth; better cool washing — skin analogue [Hering].
• Constipation increases pelvic drag — mechanical [Clarke].
• Haemorrhoids not characteristic (differential with Erigeron/Hamamelis) — caution [Farrington].
• Burning urination over excoriations, not deep cystitis — scope [Clarke].

Nose/Ears/Eyes

• Nose, margins fissured; anterior nares sore, dry — mucosa dryness [Allen].
• Coryza acrid (mild), warms worse — thermal [Clarke].
• Ears, behind, eczema fissured — keynote [Boericke].
• Eyes, external canthi sore, aggravated by heat — skin tie [Clarke].
• Warm rooms aggravate ocular/aural itching — thermal law [Hering].
• Cool air ameliorates mucosal/skin soreness — confirmation [Clarke].

Allen, T. F. — Encyclopædia of Pure Materia Medica (1874–79): proving fragments and clinical notes—acrid leucorrhœa, ovarian stitches, skin fissures; general modalities.
Boericke, W. — Pocket Manual of Homœopathic Materia Medica (1901): keynotes—bearing-down, acrid discharges, retro-auricular eczema, nodular mastodynia; modalities (jar-agg., better cold/support).
Boger, C. M. — Synoptic Key of the Materia Medica (1915): pelvic–back mechanics; modality synthesis; skeletal rubrics guiding Eupion selection.
Clarke, J. H. — A Dictionary of Practical Materia Medica (1900): substance background (paraffinic naphtha), female pelvis/mammae picture, skin analogues; clinical pearls and relationships.
Farrington, E. A. — Clinical Materia Medica (1887): comparisons—Sepia, Lilium-t., Kreos., Conium, Phyt.; menstrual/ovarian timing and breast pains.
Hering, C. — The Guiding Symptoms of Our Materia Medica (1879): confirmations—bearing-down, pruritus vulvæ, heat-agg., relief by support/cool; postpartum sag.
Hughes, R. — A Manual of Pharmacodynamics (1870): chemical nature of Eupion; cutaneous/mucosal desiccation; dietary/regimen cautions.
Kent, J. T. — Lectures on Homœopathic Materia Medica (1905): constitutional colouring of Sepia/Lilium vs Eupion; management by modalities; miasmatic notes.
Nash, E. B. — Leaders in Homœopathic Therapeutics (1899): remarks on pelvic laxity remedies and acrid leucorrhœa (for contrast with Kreos./Sepia).
Phatak, S. R. — Materia Medica of Homoeopathic Medicines (1977): concise keynotes—bearing-down, back weakness, acrid discharges; modality emphasis.
Dewey, W. A. — Practical Homœopathic Therapeutics (1901): dosing and sequencing in uterine prolapse and mastodynia; postpartum cases.
Tyler, M. L. — Homœopathic Drug Pictures (1942): vivid sketches of nodular mammae and retro-auricular eczema within Eupion’s sphere.