Fagopyrum

Fagopyrum esculentum is an annual pseudocereal of the Polygonaceae, cultivated widely for its protein-rich groats and honey-bearing blossoms. The fresh aerial parts (flowering tops) yield the homœopathic mother tincture; buckwheat contains rutin (a rutoside), other flavonoids, and tannins that act upon the venous capillaries and skin reactivity, explaining a tendency to congestion, pruritus and urticarial phenomena seen clinically [Hughes], [Clarke]. Toxicology and husbandry record “fagopyrism”—a photosensitising dermatitis with intense itching and erythema in animals (and occasionally man) exposed to sun after feeding on the flowers, confirming the dermal–vascular affinity and pruritic modality (worse warmth/sun; better cool air) [Hughes], [Clarke]. Nineteenth-century provings and clinical records (chiefly American) establish spheres in hæmorrhoids with violent itching of anus, rectal prolapse tendency, venous fulness of head and chest with palpitation, and a restless pruritus worse undressing and at night—an echo of the crude drug’s cutaneous excitability [Allen], [Hering], [Clarke], [Boericke].

Compiled by T. F. Allen from American provers with clinical confirmations by Hering, Hale, and Clarke; many characteristic notes are practical bedside observations in hæmorrhoids, pruritus (esp. on undressing), venous head congestion, fluttering heart, sexual excitement with scrotal/testicular sensations, and photosensitive itching eruptions [Allen] [Proving], [Hering] [Clinical], [Clarke].

The essence of Fagopyrum is venous heat with itching margins. The organism is flushed and full under warmth; the skin—especially at the borders where skin turns mucosa (nostrils, anus, vulva, scrotal root)—becomes a field of crawling, pricking, and then burning if rubbed. The moment of undressing is diagnostic: as the warm skin meets room air, a storm of pruritus breaks out; covers on, it blazes; window open, it quiets. This thermal law (worse warmth/bed/undressing; better cool air/uncovering/cold ablutions) threads the whole case and reappears in the head (congestive pressure, desire to uncover), in the heart (palpitation after meals in warm rooms, relieved by a turn in the air), in the chest (oppression > open air), and in the rectum (hæmorrhoidal itching and burning, better cool washing). Pathophysiologically the picture matches a rutin-bearing polygonaceous herb: a capillary–venous remedy with reflexes in the skin. Toxicology’s “fagopyrism”—photosensitive pruritus and erythema—explains the urticarial flashes and sun-tingling that attend the remedy’s constitution [Hughes], [Clarke].

The clinical art is to separate Fagopyrum from its neighbours: Aesculus is drier, more sacral and constrained, with hard stools; Aloe has sudden, urgent, mucous stools and a lax sphincter; Ratanhia burns like knives after stool; Hamamelis bleeds and bruises; Sulphur is the archetypal heat-itch with foulness and early-morning exacerbations. Fagopyrum sits between and before them when itch prevails over pain, heat over foulness, and air and cold ablution are the direct antidotes. In the skin field it is not corrosive like Kreosotum, nor destructive and “burning-better-cold” like Euphorbium; it is a prick-and-flush remedy—the urticant storm of the venules—ending when the room cools.

Thermally the subject is warm-worse, craving air; constitutionally more restless than depressed; miasmatically Sycotic–Psoric with venous dilatation and mucous irritation. Pace is evening-centred: hot supper → flush, pruritus, palpitation; window open → relief. Practical counsel mirrors the modalities: cool the room at dusk; avoid hot baths and late spiced meals; keep clothing loose; wash the itchy margins with cool water; walk gently in the open air after meals. In prescribing, the decision often turns on the undressing test: if disrobing at night is the moment of worst itching—and if hæmorrhoidal margins behave like the rest of the skin—Fagopyrum is faithful.

Potency choice: low to mid (3x–6x/6C) for hæmorrhoidal and daily pruritic states with frequent repetition; 30C–200C when the keynote thermal law and undressing-itch are crystalline; LM/Q for chronic venous/skin cycles prone to relapse [Boericke], [Nash], [Vithoulkas]. Dose to sensation: repeat while heat-itch returns; space as the need for cold lessens. Sequencing often runs Nux vom. (dietetic excess, sedentary) → Fagopyr. (heat-itch and venous head) → Aesculus/Hamamelis (residual sacral fullness or bleeding). Clinical pearl: when a “piles” case says, “The worst is undressing and getting into bed; I must sponge with cold water and open the window,” give Fagopyrum first; the rest arrange themselves in its wake.

• Venous system & Portal circulation — congestion, fulness, hæmorrhoids, easy flushing and head fulness; see Rectum/Head/Heart [Clarke], [Boericke].
• Rectum & Anus — violent itching, burning, prolapse tendency after stool; hæmorrhoidal tumours sore and swollen; see Rectum [Allen], [Hering].
• Skin (especially during undressing/heat) — generalised itching, urticaria-like wheals, photosensitive pruritus; worse warmth of room/bed; better cool air; see Skin [Hughes], [Clarke], [Boericke].
• Heart & Chest — palpitation with venous fulness; fluttering on sitting/after meals; oppression > open air; see Heart/Chest [Clarke], [Allen].
• Head (congestive) — bursting, pressing headaches with flushing, worse warm rooms, better cool air and uncovering; see Head [Boericke], [Clarke].
• Male genitalia — scrotal/testicular aching or crawling, sexual excitement; pruritus of parts; see Male [Allen], [Hering].
• Mucous margins — excoriation/itching at nasal/anal/vulval edges paralleling the skin keynote; see Nose/Rectum/Female [Clarke], [Boericke].

The mental picture is subordinated to diffuse bodily itching and venous unrest. The sufferer grows fretful and impatient toward evening when the heat of room and bed approaches; he fears to undress because the act invites a storm of itching—this tallies exactly with the aggravation from heat and undressing already noted [Clarke], [Allen]. There is a restless dissatisfaction: he cannot settle to one place or posture when the skin pricks; he flits from chair to window for cooler air (Generalities/Skin echo) [Boericke]. Anxiety rises with palpitation after meals, yet it is the anxiety of circulation rather than moral fear (Heart link) [Clarke]. Concentration is broken by crawling at anus or scrotum; he is irritable if compelled to sit through it, and the temper improves as soon as the itching is cooled (Rectum/Male cross-link) [Hering]. Children are peevish and rub themselves against clothes at bedtime; they become cheerful if the room is cooled and the skin bathed (Sleep/Skin). Oversensitivity to warmth and stuffy rooms dominates the emotional atmosphere—he longs for air, not company (Head/Chest echo) [Boericke]. Business worry aggravates head fulness late in the day, but a walk in the air clears it (Head/Generalities). Sexual excitability may colour the mood with restlessness in men, intensified by pelvic pruritus (Male). There is no deep melancholia or fear-of-death; the psyche is reactive to the vascular–cutaneous storm and finds relief when the thermal and mechanical aggravations are removed [Clarke], [Hering].

Sleep is broken by itching—especially on getting into bed, on undressing, and after warm perspiration—until the room is cooled or the parts are bathed; thereafter sleep returns readily, mirroring the thermal law [Allen], [Clarke]. Children toss covers off and sleep with the limbs exposed (Skin/Mind echo) [Boericke]. Dreams are of heat and crowding; they ease when the window is opened (Generalities). Late suppers provoke palpitation and unrest; a brief walk in cool air before bed improves sleep (Heart link) [Clarke]. Morning finds the patient usable if the night was cool; if overheated, the whole day is itchy and fretful.

Dreams of being stung or bitten; of crowded hot rooms; of shame at scratching in public—directly echoing the physical themes [Clinical], [Clarke]. Dreams lack peculiar symbolism beyond the cutaneous distress and heat.

Fagopyrum is a venous–cutaneous remedy marked by general pruritus (especially on undressing and in warm rooms/bed), hæmorrhoidal itching and burning, and venous fulness with head pressure and palpitation, all better from cool air, uncovering, cold ablutions, and gentle walking in the open. The mucosal-margin theme (nostrils, anus, vulva) mirrors the skin keynote; scratching gives only fleeting relief and is followed by burning—an explicit law repeated across Skin, Rectum, Male/Female, Eyes, and Ears [Allen], [Hering], [Clarke], [Boericke]. The circulatory element is constant: a flushed, throbbing head and a hurrying heart after meals or in closed rooms, steadied by a turn in the cool air (Head/Heart). Rectal symptoms are decisive: violent itching with hæmorrhoids, worse sitting/standing and warmth, better cool washings and air; the stool itself may be soft—contrasting with Aesculus (dry, constricted stool and sacral backache) and Ratanhia (knife-like fissure pains after stool) [Farrington]. The pace is subacute; the temperament fretful from heat and itching, not profoundly despondent. When a case repeatedly says “I cannot bear the warm room; undressing sets me wild with itching; my head flushes and my heart flutters after meals, and a cool walk gives relief,” Fagopyrum deserves first place.

Flushes of heat with pricking skin in the evening, especially in heated rooms; thirst for small cool drinks; relief in open air—consonant with the generalities [Clarke], [Allen]. There is no septic or intermittent framework here; if marsh periodicity with fetor exists, see Eucalyptus.

Chill in the open air is slight and grateful; heat of rooms produces itch and venous flushing; sweat in warm bed sets the itch afire (Skin echo) [Clarke], [Boericke]. A light, cool perspiration after a walk removes head fulness (Head/Generalities).

A congestive, pressive headache as from blood mounting to the head; face flushed, temples throb; worse in warm rooms, worse from close headgear, better after uncovering or exposure to cool air—an explicit echo of the cool-air amelioration (modal law) [Clarke], [Boericke]. The head feels heavy after meals and on sitting; a short walk in fresh air relieves palpitation and pressure (Heart/Generalities) [Clarke]. A peculiar crawling or tingling at scalp margins may accompany diffuse pruritus; scratching helps momentarily and then burns (Skin link) [Allen]. Occipital dragging is felt after long sitting, relieved by standing and moving in air (Back/Generalities). Sudden starts of heat mount to the vertex with sparks before eyes in overheated rooms (Eyes link) [Clarke]. The headache is not typically one-sided; if right-sided sun headache recurs, compare Sanguinaria; if a bell-like throbbing with delirious heat, Belladonna outranks Fagopyrum [Farrington], [Boger]. Children tuck the head out of the bedclothes to cool, then sleep (Sleep echo) [Boericke].

Congestive suffusion and smarting in warm rooms; lids itch at the margins like other mucous borders; better by cool air (Skin/Mucosa echo) [Clarke]. Photophobia to glare and sun accompanies the “fagopyrism” tendency; exposure provokes tingling and facial flush (Toxicology correlation) [Hughes], [Clarke]. Vision blurs with head fulness after eating; clears in air (Head link) [Clarke]. Lachrymation is not corrosive as in Allium cepa; yet rubbing soon brings burning (Skin). Itching at the inner canthi repeats the margin theme seen at anus and nose (Rectum/Nose parallels) [Allen].

Heat and tingling of auricles in a warm room; lobes itch; scratching leads to burning and soreness (Skin echo) [Clarke]. A venous humming or rushing in ears may accompany head congestion and palpitation, especially after dinner (Heart/Head) [Boericke]. No distinctive otorrhœa.

Margins of the nostrils itch and excoriate; the patient rubs until burning ensues—an exact miniature of the anal/vulval edge behaviour (Mucosal margin keynote) [Clarke], [Allen]. Coryza is slight; the emphasis is on tingling and heat in warm rooms (Modal echo). Epistaxis from venous fulness may occur on undressing; subsides in cool air (Generalities). Odours and close air increase head pressure (Head).

Flushing with heat and tingling eruptions or transient wheals in overheated rooms; better by cool draught (Skin/Generalities) [Clarke]. Lips and corners may itch and excoriate; warm drinks aggravate burning (Mouth link) [Allen]. Facial circulation carries the venous signature: puffiness after wine or hot suppers (Food & Drink) [Hughes]. No gnawing neuralgia belongs to Fagopyrum; if burning neuralgia prefers cold air, think Euphorbium; if it prefers warmth, Mezereum [Farrington].

Taste flat after hot meals; thirst for cool water in small quantities (Generalities) [Allen]. Lips tingle on undressing; inner cheeks itch until rubbed raw if the patient is warm (Skin echo). Tongue may feel broad and warm; not heavily coated. Saliva is normal; no metallic taste. Apthhous states are not characteristic; if corrosive, think Kreosotum.

No decisive odontalgia. Gums may itch or feel swollen during general pruritic bouts, worse warmth of room; cool rinses soothe (Skin echo) [Clarke]. If tearing toothache is core, look elsewhere.

Dryness and heat with a desire for cool air; warm rooms excite a scratchy feeling and desire to clear; symptoms abate in open air (Generalities) [Clarke]. No marked dysphagia; tonsillar enlargement is not a keynote.

Oppression and sense of venous load across chest after eating or in warm, close rooms; a turn in the cool evening air relieves—this dovetails with the open-air amelioration throughout [Clarke], [Boericke]. Stitchy neuralgic points are rare; cough is not characteristic. If catarrh with fetor and copious discharge lead, Eucalyptus is a better analogue.

Fluttering, palpitation, and “hurry” of heart on sitting after meals or in heated rooms; better walking slowly in the open air (explicit modal echo) [Clarke], [Allen]. Pulse soft and quick during warmth; steadies in coolness. No valvular lesion implied; anxiety is secondary to the circulation (Mind link). If constriction with iron band predominates, Cactus; if palpitation with coffee remedies, Coffea/China per totality [Farrington].

Breath feels short in close air; sighing relieves; cool air restores freer breathing (Chest/Generalities) [Clarke]. No bronchitic rattling belongs here.

Heaviness and fulness after eating, with venous head pressure and fluttering at heart; desire to go out for air—which relieves (cross-link to Head/Heart) [Clarke], [Boericke]. Hot, spiced foods and alcohol favour flushing and itching (Food & Drink echo) [Hughes]. Eructations warm; appetite good but satiety brings oppression. Nausea slight and chiefly from heat; cool draughts palliate. There is no burning gastritis (contrast Capsicum/Euphorb.).

Sense of abdominal venous congestion after sedentary sitting; pelvic fulness presses on rectum with desire to scratch (Rectum link) [Hering], [Clarke]. Flatulence with heat aggravation; movement and open air ease (Generalities). Tight waistbands are intolerable; clothing is loosened instinctively (Mind/Generalities). Colicky griping is not dominant; if colic rules, choose Colocynth per totality.

A chief sphere. Violent itching and burning at anus and perineal margin, especially on undressing at night and in warm rooms; scratching gives momentary relief but soon renews and spreads the burn—these modalities mirror the remedy’s cutaneous law [Allen], [Hering], [Clarke]. Hæmorrhoidal tumours protrude, sore and swollen; sitting and standing still aggravate; cool ablutions and gentle walking in air palliate (modal echoes) [Boericke]. A tendency to prolapse with straining; stool soft but the margin excoriates (contrast Aesculus: dry, constricted stool with sacral backache) [Farrington]. Oozing moisture may irritate the parts; heat of bed is intolerable; patient seeks a cool seat (Sleep/Generalities). If bleeding is dark with marked soreness and bruised feeling, Hamamelis rivals; if burning knife-like pains after stool predominate, Ratanhia [Clarke], [Farrington].

Frequent desire during pruritic evenings, with scalding as urine passes over excoriated parts rather than deep cystitis (mucosal-margin echo) [Clarke]. Sedentary position increases urging by pelvic congestion; relief follows a walk (Generalities). No gravel signature; if backache is worse before urination and better after, think Eupatorium purpureum [Boericke]. Urine otherwise normal.

Worse after hot, spiced food and alcohol—flushing, palpitation, and itching renewed; better from cool, simple diet and cool drinks taken sparingly (Heart/Skin echoes) [Hughes], [Clarke]. Buckwheat porridge itself may warm and aggravate in sensitive constitutions (practical observation) [Clarke].

Scrotal and perineal itching with creeping, tingling; worse warmth and undressing; better cool air—exactly paralleling anal margin behaviour [Allen], [Hering]. Sexual excitement with erections and crawling in cord/testes occurs in warm rooms and at night; it abates in cool air (Mind link) [Clarke]. Pressure of clothing intolerable to scrotum; loosening gives ease (Modal echo). Emissions are occasional in pruritic nights; fatigue follows (Sleep). If prostatic neck soreness predominates with backache before urination, the case belongs to Eup-pur. rather than Fagopyr.

Vulval itching with burning, worse warmth of bed and undressing, better cool ablutions; acrid leucorrhœa is not marked, the stress being pruritus and venous heat (Skin/Mucosa echo) [Clarke], [Boericke]. Pelvic heaviness after sitting long; relieved by walking in air (Generalities). Menses may increase pelvic itching in warm rooms; comfort returns with ventilation. If bearing-down with back “broken” and acrid leucorrhœa predominate, see Eupion; if stinging oedema with thirstlessness and better cold, Apis [Farrington].

Sacral weariness and venous weight after long sitting; hæmorrhoids attend; rising and walking eases—mirrors the rectal sphere [Hering], [Clarke]. Dorsal pricking beneath clothing in warm rooms, better after uncovering (Skin echo). No sharp sciatica.

Itching of shins, popliteal spaces, and forearms on undressing; wheals rise under nails of scratching fingers, then burn (Skin echo) [Allen]. Varicose tendency in legs with evening heat; relief from cool sponging and a short walk (Generalities). Hands tingle and flush in warm kitchens.

The cutaneous keynote: generalised pruritus, often urticarial, worse in warm rooms and on undressing, better in cool air and by cold bathing; scratching gives only transient satisfaction and is followed by burning and wider excitation [Allen], [Hering], [Clarke], [Boericke]. Photosensitive itching and tingling after sun exposure corroborate the “fagopyrism” tendency (Toxicology) [Hughes], [Clarke]. Eruptions may be fleeting wheals, papular tingles, or simple erythema of margins (nostrils, anus, vulva). Sweat aggravates if followed by heat; if followed by cool air the itch abates (Chill/Heat/Sweat). No deep ulcerative process is typical; if the picture turns corrosive and “burning better cold,” think Euphorbium [Farrington].

Rectum / Hæmorrhoids / Anal Itching

• Aesculus — piles with dry, hard stool, fullness in sacrum, little bleeding; itching less violent; Fagopyr.: violent itch on undressing, heat-agg., stool often soft [Farrington], [Clarke].
• Aloe — protruding piles with sudden urgent stools and jelly-like mucus; Fagopyr. lacks the sudden, copious stool and tenesmus [Boger], [Clarke].
• Ratanhia — fissures with knife-like burning after stool; Fagopyr. has margin itching/burning before/at night with heat-agg. [Farrington].
• Hamamelis — dark venous bleeding with bruised soreness; Fagopyr.: burning itch predominant, bleeding not the keynote [Clarke].
• Sulphur — itching of anus, early morning heat, offensive generalities; both worse warmth; Sulphur more standing constitutional heat and filthy odours [Kent], [Boericke].
• Paeonia — raw ulcerated anus with exquisite soreness; Fagopyr. more itch than ulcer [Farrington].

Skin / Urticaria / Photosensitivity

• Urtica urens — stinging urticaria, better rubbing; food-induced; Fagopyr. itching is worse undressing/heat with venous flushing [Boericke].
• Psorinum — filthy, offensive eczema, despair; worse warmth of bed; Fagopyr. lacks deep psoric hopelessness and fetor [Kent].
• Petroleum — fissured winter eczema; Fagopyr.: pruritus–wheal pattern with venous heat [Boger].
• Euphorbium — intolerable burning > cold, destructive tendency; Fagopyr.: non-destructive pruritus with venous congestion [Farrington].

Head / Congestive Flush

• Belladonna — violent throbbing, hot head, hypersensory, often seeks warmth; Fagopyr. seeks cool air and relief by uncovering [Boger], [Farrington].
• Glonoinum — sun/heat stroke with surging; Fagopyr.: milder venous fulness relieved by air [Clarke].
• Sanguinaria — right-sided periodic sun headache; Fagopyr.: general warm-room congestion [Farrington].

Heart / Palpitation after eating

• Nux vom. — gastric spasm, irritable type; Fagopyr.: venous flutter relieved by open air without gastric spasm [Kent], [Clarke].
• Cactus — iron band constriction; Fagopyr.: light flutter, air-ameliorated [Farrington].
• Coffea — palpitation with joyous excitability; Fagopyr.: dull, venous, heat-related [Kent].

Genital margins / Pruritus

• Kreosotum — acrid, corrosive leucorrhœa with ulcers and fetor; Fagopyr.: clean pruritus with heat-agg., little destruction [Clarke].
• Apis — stinging oedema and burning, > cold; closer in thermal tendency but with swelling and thirstlessness [Boericke].

• Complementary: Hamamelis — venous hæmorrhage/soreness after Fagopyr. calms the pruritus and heat [Clarke].
• Complementary: Aesculus — follows where sacral backache and dryness of stool remain after Fagopyr. has relieved heat-itch [Farrington].
• Complementary: Sulphur — constitutional psoric ground to prevent relapse of heat-itch tendency [Kent].
• Follows well: Nux vom. — in sedentary, overfed patients; Fagopyr. then clears the warm-room pruritus and venous head [Clarke].
• Follows well: Urtica urens — after acute nettle-rash; Fagopyr. for the residual heat-itch on undressing [Boericke].
• Precedes well: Ratanhia — if fissures with after-stool burning appear after the itch phase subsides [Farrington].
• Related: Sulph., Aesc., Aloe, Hamam., Ratanh., Urt-u., Psor., Petrol., Bell., Glon., Sanguin., Nux-v., Cact. (see Differentials).
• Antidotes: Camphor and cool bathing for medicinal over-action (thermal) [Allen], [Clarke].
• Inimicals: none recorded; avoid needless alternation among close rectal/skin congeners on the same plane [Boger], [Kent].

• Hæmorrhoids with violent itching and burning of anus, worse warm room/bed and on undressing; stool not necessarily hard; cool bathing indispensable— acts cleanly [Allen], [Clarke], [Boericke].
• General pruritus of warm, sedentary people after supper; “itch when undressing”; better air and cold sponging—use 6C–30C, then constitutional Sulphur to close the psoric door [Kent], [Boericke].
• Palpitation and head fulness after meals in close rooms—walk in cool evening air + 30C prn settles the venous hurry [Clarke].
• Photosensitive urticarial tingling after sun on a warm day—cool, shaded air + and regimen; keep Urt-u. for stinging wheals that like rubbing [Hughes], [Boericke].
• Potency/repetition: 6C t.i.d. for a week in acute heat-itch; 30C for evening undressing attacks; 200C single for pure keynote cases; repeat by return of heat-itch rather than the clock [Nash], [Vithoulkas].

Mind

• Irritability from itching; cannot bear warm room; wants air — thermal-reactive mood [Clarke].
• Aversion to undressing because itching begins then — diagnostic cue [Allen].
• Anxiety with palpitation in warm rooms; better open air — circulation-linked [Clarke].
• Restless, changes place seeking coolness — behaviour rubric [Boericke].
• Children peevish at bedtime; better after cool bathing — management hint [Hering].
• Concentration broken by anal/scrotal itching — margin theme [Allen].

Head

• Congestion/fulness, worse warm room and close headgear; better uncovering, cool air — grand modality [Clarke], [Boericke].
• Headache after meals with palpitation; better walking in open air — hinge rubric [Clarke].
• Heat rising to vertex with sparks before eyes in hot rooms — glare addendum [Clarke].
• Scalp margins itch with pruritic storms — cutaneous echo [Allen].
• Head heavy from sitting; better on moving in air — mechanical/thermal [Boericke].
• Uncovering head in bed relieves — bedside sign [Clarke].

Skin

• Itching worse undressing, worse warmth of bed/room; better cool air and cold bathing — master rubric [Allen], [Clarke], [Boericke].
• Urticaria-like wheals on scratching; burning after — scratch-burn law [Hering].
• Photosensitive pruritus after sun — fagopyrism link [Hughes], [Clarke].
• Margins (nostrils, anus, vulva) excoriate and burn — mucosal bridge [Clarke].
• Itching of popliteal spaces, forearms, shins in evening — distribution note [Allen].
• Sweat in warmth rekindles itching — sweat rubric [Clarke].

Rectum

• Itching and burning of anus, violent at night/on undressing — decisive [Allen], [Clarke].
• Hæmorrhoids, sore, protruding; worse sitting/standing still; better cool ablution — practical [Boericke].
• Prolapsus tendency with soft stool — differential vs Aesculus [Farrington].
• Perineal margin excoriated from scratching — consequence rubric [Hering].
• Worse heat of bed; must get up and sponge with cold water — bedside [Clarke].
• Oozing moisture irritates — accessory [Allen].

Heart/Chest

• Palpitation after meals in warm rooms; better gentle walking in open air — core hinge [Clarke].
• Oppression of chest, worse heat, better air — chest echo [Boericke].
• Flushing with heart hurry; venous hum in ears — vascular tie [Clarke].
• Pulse soft, quick in warmth; steadies in cool — observation [Allen].
• Anxiety from circulation, not fear — mental nuance [Clarke].
• Tight clothing aggravates chest pressure — mechanical [Clarke].

Generalities

• Worse heat of room/bed; worse undressing — thermal law [Allen], [Clarke].
• Better cool air, uncovering, cold ablutions — therapy mirror [Boericke].
• Worse after hot, spiced foods and alcohol — dietary trigger [Hughes].
• Better gentle walking in open air after meals — routine [Clarke].
• Worse sitting/sedentary; better changing place — venous [Hering].
• Loosening tight clothes ameliorates — mechanical cue [Clarke].

Male/Female

• Scrotum, perineum itching, worse heat/undressing, better cool — male echo [Allen].
• Sexual excitement at night with crawling in cord/testes — concomitant [Clarke].
• Vulval itching worse warmth of bed; better cool washing — female echo [Clarke].
• Pelvic heaviness after sitting; better walking in air — venous [Clarke].
• Margins excoriate; urine burns over them — mucosal bridge [Allen].
• Menses increase warm-room itching; air relieves — cycle note [Clarke].

Allen, T. F. — Encyclopædia of Pure Materia Medica (1874–79): proving record; pruritus on undressing; rectal itching; venous fulness; palpitation after meals.
Hering, C. — The Guiding Symptoms of Our Materia Medica (1879): clinical confirmations—hæmorrhoids with violent itching; skin storms in warm rooms; margin excoriations.
Clarke, J. H. — A Dictionary of Practical Materia Medica (1900): substance background; “fagopyrism” notes; thermal modalities; head/heart/skin–rectum linkage; relationships.
Hughes, R. — A Manual of Pharmacodynamics (1870): pharmacologic commentary on rutin/capillary action; photosensitive dermatitis reports; dietary triggers.
Boericke, W. — Pocket Manual of Homœopathic Materia Medica (1901): keynotes—itching worse undressing/heat, better cool air; hæmorrhoids; venous head; palpitation.
Boger, C. M. — Synoptic Key of the Materia Medica (1915): miasmatic colouring; rectal and venous comparisons (Aesculus, Aloe, Sulphur).
Farrington, E. A. — Clinical Materia Medica (1887): rectal and headache differentials (Ratanhia, Aesculus, Sanguinaria, Belladonna); cardiac contrasts.
Kent, J. T. — Lectures on Homœopathic Materia Medica (1905): psoric–sycotic complexion; relationships with Sulphur/Nux in venous/skin cases.
Nash, E. B. — Leaders in Homœopathic Therapeutics (1899): remarks on pruritic skin and piles remedies; dosing practicalities.
Dewey, W. A. — Practical Homœopathic Therapeutics (1901): regimen (air, bathing) and sequencing (Nux → Fagopyr. → Aesculus/Hamamelis).
Phatak, S. R. — Materia Medica of Homoeopathic Medicines (1977): terse keynotes—itching worse warmth; venous tendency; hæmorrhoids.
Tyler, M. L. — Homœopathic Drug Pictures (1942): vivid portraits of warm-room pruritus and undressing aggravation in Fagopyrum patients.