Ammonium muriaticum

Ammonium chloride is an inorganic, saline compound formed by neutralising hydrochloric acid with ammonia; historically known as sal-ammoniac, it occurs naturally as sublimates around volcanic fumaroles and was long prepared from soot of animal matter and saline ashes. In pharmacology it has expectorant properties (reflex stimulation of bronchial secretion) and an irritant action upon mucosae, explaining the catarrhal and stringy-mucus phenomena seen clinically [Hughes], [Clarke]. In homeopathy it is triturated to the 3rd attenuation and beyond; clinical experience placed it among remedies of mucous membranes, pelvic congestion, and sciatica with shortened-tendon feeling, particularly in chilly, stout or flabby subjects who suffer in damp weather and from sedentary habits [Hering], [Boericke], [Phatak].

Symptoms derive chiefly from [Proving] material collated by Hering and T. F. Allen (provings and toxicology) with robust [Clinical] confirmations in British and American literature—especially catarrhs with ropy, glairy mucus, constipation with crumbling stool, pelvic congestion with black clots, heel pains, and sciatica better from stretching or walking and worse sitting [Hering], [Allen], [Clarke], [Boericke], [Boger], [Phatak].

Ammonium muriaticum typifies the congested, chilly, damp-aggravated constitution in whom life’s passages—nose, throat, rectum, uterus, and even the sciatic track—are clogged or tight. The central image is viscid, glassy mucus and sluggish portal circulation in a sedentary, often stout or flabby patient. The organism is not violently inflamed; rather, it is over-filled and under-moving. Thus the leading polarities are: glairy obstruction vs. warm loosening, rest/sitting worse vs. gentle walking better, cold damp worse vs. dry warmth better, and night aggravation vs. morning relief as expectoration becomes free. This polarity repeats across sections: the head clears as post-nasal slime drains; the chest frees in the morning; the rectum burns after crumbling stool yet relents with warmth and movement; sciatica tightens at a desk and eases when walking and stretching; heels stab on first stepping yet grow tolerable with continued steps. The pelvic-portal reciprocity is striking: piles and black clots alternate with head and chest oppression; when one vent opens the other quiets—practical guidance for prescribing and follow-up [Clarke], [Boger], [Hering].

Kingdom signature (mineral salt) gives a structural, tonal theme rather than an emotional drama: tone too tight in the cords (hamstrings/heels), tone too thick in the secretions (glairy mucus), tone too stagnant in the portal beds. Where Kali-bi. chisels ulcerative tracks and ropy strings, Am-m. keeps a clean glassiness and heaviness; where Nat-s. breathes the marsh with green biliousness, Am-m. shivers and clogs; where Rhus-t. frets restlessly, Am-m. lumbers and improves with simple, steady walking; where Graph. seeps and oozes, Am-m. cracks and burns. Miasmatically, psora supplies the sluggish reactivity and chilliness; syco-syphilitic colouring appears in fissures, rhagades, and the tendency to clots and nodal swellings. The prescriber’s eye should look for the quadruple keynote: (1) Glairy, glassy mucus difficult to detach (nose/throat/chest); (2) Haemorrhoids/fissures with burning and crumbling stool; (3) Sciatica or hamstring tightness better walking/stretching; (4) Heel pain on first stepping. When set within the damp-fog worse, warmth/morning/motion better framework, Am-m. declares itself with quiet certainty [Hering], [Boericke], [Phatak], [Clarke].

• Mucous membranes—nose, throat, bronchial tree. Tenacious, stringy, glairy secretions; difficult expectoration with cough worse at night, better in morning as mucus loosens. See Nose/Throat/Chest/Respiration. [Hering], [Boericke], [Clarke].
• Pelvic organs—uterus, haemorrhoidal plexus. Congestive states with dark, clotted menses, acrid leucorrhoea; haemorrhoids and fissures with burning and smarting. See Female/Rectum. [Hering], [Clarke], [Phatak].
• Portal system—liver and spleen. Stitching pains, fulness, and sluggish portal circulation in sedentary, stout persons; worse damp. See Abdomen/Generalities. [Boger], [Clarke].
• Peripheral nerves and tendons—sciatic distribution, hamstrings, heels. Sciatica with sensation as if tendons too short; heel pains on first stepping in morning; joints crack. See Back/Extremities. [Hering], [Boericke], [Phatak].
• Skin—fissures, rhagades, warts, and urticaria on exertion. Dry chaps with burning; nettle-rash after effort. See Skin. [Clarke], [Boericke].
• Gastro-intestinal tract. Gastric catarrh; constipation with stools hard, crumbling, or coated with mucus; burning after stool. See Stomach/Rectum. [Allen], [Phatak].
• Glands. Cervical and axillary nodes enlarged in catarrhal subjects; sluggish reactivity. See Generalities. [Boger], [Clarke].

Mentally dull, heavy, and easily fatigued, particularly in damp weather or after broken sleep from night cough; indolence is marked, with aversion to effort and sedentary apathy that mirrors the physical sluggishness and portal stasis [Clarke], [Boger]. Irritable and snappish when disturbed, especially at night, then remorseful by day—reactivity is slow yet easily offended [Hering], [Allen]. Hypochondriacal anxiety centres on digestion, congestion, and the heart when climbing or hurrying; this abates as catarrh clears and bowels move, cross-linking to the modalities (better motion/after stool) already noted [Boger], [Clarke]. Concentration flags in chilly, damp rooms; memory seems clogged “as with mucus,” a metaphor repeatedly used in clinical notes—clarity returns in dry warmth [Clarke], [Tyler]. In women there is despondency pre-menstrually with weariness and a wish to be alone, improving once the dark flow is established—echoing the pelvic congestion affinity [Hering], [Clarke]. Children exhibit sullenness and obstinacy during catarrhs, then brighten with freer breathing and stool—a pragmatic [Clinical] index of action [Boericke]. The mood lacks the gaiety of Puls. or the anxiety of Ars.; it is the heavy, congested temperament that moves when pushed and improves with motion, correlating with better-from-gentle-walking observed in the limbs [Phatak], [Boger].

Unrefreshing; much night coughing with inability to detach mucus; wakes tired and heavy, better after a warm drink and morning expectoration—time course exact [Hering], [Allen]. Restless from sciatic pains and heel soreness on turning; must get up and walk a little (better motion). Dreams of effort and business; sleep disturbed by heat of head and cold feet—thermal discordance common in portal states [Clarke]. Sleeps best towards morning when mucus has shifted; yet early rising renews heel pains on first stepping, creating a cyclical morning misery that confirms the remedy choice [Boericke]. Snoring in damp rooms; clearer in dry warmth.

Dreams of walking and being impeded, reflecting the shortened-tendon sensation; dreams of falling with sudden waking in first sleep; anxious dreams around menses; business and worry dreams in sedentary men—minor confirmations that improve with motion and warmth [Clarke], [Boericke].

A remedy for chilly, damp-aggravated, sedentary, flabby or obese persons who suffer from tenacious, glairy mucus, portal congestion, piles, black-clotted menses, sciatica better from motion, and heel pains worse on first stepping [Clarke], [Boericke], [Phatak]. Modalities are highly consistent: worse night, cold damp, rest, sitting, stooping, after eating; better warmth, gentle walking, stretching, pressure, and in the morning after expectoration. Tissues are congested rather than inflamed; secretions are not notably fetid (contrast Hydrastis) but viscid and detachable with warmth (contrast Ant-t. where detachment fails) [Hering], [Boericke]. The case often alternates between head/respiratory congestion and rectal/pelvic relief—use this reciprocity diagnostically. Micro-comparisons: Kali-bi. shares stringiness but is more ulcerative and sinus-centred; Nat-s. shares damp aggravation but is more bilious; Graph. shares fissures in stout chilly persons but is oozier; Sep. shares bearing-down pelvic states but has more “emptiness” and aversion to family; Rhus-t. shares better-motion but is more restless and traumatic [Boger], [Clarke], [Phatak].

Tendency to take cold in fog and damp; chill predominates with shivering in a warm room; heat of head and face during cough; sweat on slight exertion with urticaria; overall low-grade, congestive febrile pattern in catarrhal seasons [Clarke], [Boericke]. Better after morning perspiration when mucus loosens—again cross-linking to modalities.

Chill: damp-fog chill with blue extremities, worse sitting; relieved by moving and warm wraps.
Heat: head and chest heat during night cough; hands remain cool; face flushes on exertion or menses.
Sweat: easy on exertion; itching nettle-rash after sweating; sweat does not relieve heaviness unless expectoration becomes free—ties to Chest/Respiration [Clarke], [Boericke].

Heaviness and stupefying ache, chiefly frontal or supra-orbital, worse in damp weather or cold rooms, accompanied by thick post-nasal mucus which, when discharged, lightens the head—an echo of the mucous membrane affinity [Clarke], [Hering]. Stitching or tearing pains arise on stooping or after meals (gastric-cephalic link), relieved by pressure or tight bandage—paralleling the Better-pressure modality [Boger]. Vertex heat with facial pallor occurs during night cough and yields as expectoration begins in the morning [Allen]. The scalp may feel tight; dandruff and itching appear in chilly subjects [Boericke]. Headache alternates with piles or uterine congestion, mapping a portal-pelvic connection; when haemorrhoids protrude, the head clears—useful [Clinical] reciprocity [Clarke]. Compare Kali-bi. (frontal pain with stringy mucus but more sinus ulceration) and Nat-s. (damp-weather head pains with biliousness); Am-m. is heavier, congestive, and catarrhal without the ulcerative keynote [Boericke], [Boger].

Smarting, burning eyelids with morning gum and glairy mucus accompany nasal catarrh; lids stick together on waking, better after washing in warm water—mirroring the Better-warmth [Clarke], [Boericke]. Lachrymation is bland or slightly salty; photophobia is mild and functional from heaviness in head. Styes recur in damp weather on the upper lid; they resolve slowly in the sluggish constitution [Hering]. Vision blurs with headache and improves after nasal discharge; there is no deep ciliary spasm, differentiating from Ruta or Spig. [Allen].

Cracking in Eustachian tubes on swallowing during catarrh; dulled hearing in damp fog and in cold rooms; better in dry, warm weather and after free nasal discharge—precise reflection of modalities [Clarke]. Stitching otalgia occurs on stooping or blowing the nose; subacute middle ear catarrh with thick mucus mirrors the upper airway picture. Compare Kali-m. for Eustachian catarrh; Am-m. has more portal and pelvic concomitants, and heel/sciatic hints to confirm [Boger], [Boericke].

Coryza with obstruction and glairy, stringy mucus that is difficult to expel; blowing gives little relief until warm drinks or warmth loosens it—core keynote [Hering], [Boericke], [Clarke]. Post-nasal drip keeps up hawking and a morning cough that loosens expectoration; damp, foggy weather blocks the nose and thickens mucus, while dry warmth clears it, precisely mirroring Better/Worse [Clarke]. Sneezing in cold rooms, nose sore from wiping, anosmia during heavy catarrh; nosebleed may occur during congestion or menses irregularity [Allen], [Clarke]. Differentiate Kali-bi. (tough ropy strings with sinus ulceration and fetor) and Hydrastis (thick, tenacious, yellow rope and rawness); Am-m. often has clearer, glassy mucus with portal/haemorrhoidal links [Boericke], [Boger].

Pale, heavy, or sallow; circled eyes; lips dry and cracked in cold weather; face flushes on exertion or during pelvic congestion then pales as it relieves [Clarke]. Facial neuralgia stitches on stooping or in damp fog; better pressure and warmth—again aligning modalities [Boger]. The expression is dull or oppressed during night coughs; mornings are clearer once mucus moves.

Tongue coated white or yellowish; mapped or indented edges in sluggish digestion; taste sour or flat on waking, improving after warm drink and expectoration [Allen], [Clarke]. Tenacious saliva; throat coated with glairy strings needing constant hawking—bridging to Throat [Hering]. Aphthous patches are occasional in chilly seasons; they heal slowly in the flabby subject [Boericke].

Grinding at night in children during catarrhs; toothache worse cold air and after meals, better warmth and pressure; gums bleed with pelvic congestion or at menses—minor but confirmatory [Clarke], [Allen]. Dental neuralgia on stooping suggests venous head-face pooling that improves with upright posture.

Sensation of a plugh of tough, glassy mucus high in the pharynx with constant ineffectual hawking until warmed; relief after warm drinks and in warm rooms—quintessential [Hering], [Clarke]. Fauces look pale, thickened; follicles enlarged; voice rough from post-nasal slime, worse at night; better in morning after expectoration [Boericke]. Stitching on swallowing cold air; much scraping and hemming in damp fog. Compare Kali-bi. for tenacity (more ulcerative and string-drawn), Hydrastis for ropy yellow catarrh with rawness; Am-m. keeps to clear-glairy mucus and pelvic links [Clarke].

Dry, teasing night cough with difficult, glassy expectoration; morning brings easier detachment and relief—time modality explicit [Hering], [Allen]. Oppression in damp, foggy weather; chest-wall stitches on deep breath or stooping; better lying on painful side (pressure) [Boger]. Hoarseness in cold rooms; voice thick from post-nasal slime. Compare Ant-t. (rattling with inability to raise) and Kali-bi. (string-drawn plugs); Am-m. is mid-zone: glairy, less fetid, with pelvic/rectal partners [Boericke].

Palpitation on climbing or hurrying in obese, chilly subjects; pulsations felt in epigastrium during gastric catarrh; anxiety subsides with rest and open nasal breathing [Clarke]. No primary structural action claimed; functional circulatory states reflect general sluggishness.

Dyspnoea worse at night and in damp fog; must sit up to hawk thick slime, yet not with the collapse of Am-c.—distinguishing feature [Hering], [Boericke]. Breath is short on first moving after long sitting; improves as one walks—respiratory analogue of the sciatica modality. Sighing respiration during headache; chest feels heavy until mucus moves.

Heaviness after meals; eructations sour or tasteless; nausea from tenacious phlegm swallowed; cough provoked by gastric irritation—stomach-chest axis [Allen]. Thirst is moderate; desires warm drinks which ease throat and cough, supporting Better-warm [Boericke]. Aversion to fat during catarrhs; distension after cold drinks. Morning sickness-like nausea in women around menses or with uterine congestion—echoing pelvic affinity [Clarke].

Fullness and portal congestion with stitching in right or left hypochondrium (liver and spleen); worse stooping and damp; better after stool or gentle walking—congruence with modalities [Boger], [Clarke]. Bloating and gurgling after meals; flatulence ascends and provokes cough. In flabby, chilly patients the abdominal wall feels lax and heavy; tight clothing is intolerable during menses [Hering]. Bearing-down pelvic sensation accompanies haemorrhoids or congestive menses.

Constipation with hard stools that crumble and break on passing, often coated or followed by glairy mucus; burning and smarting after stool with fissures or piles—strong keynote [Hering], [Allen], [Boericke]. Ineffectual urging with sensation as of something sticking in the rectum; relief from warm applications and gentle movement. Haemorrhoids protrude, itch, and burn; worse sitting long, better walking and after a soft evacuation—again mirroring Better-motion [Clarke], [Phatak]. Alternate days: loose stool with mucus when chilled damp. Compare Nux-v. (spasmodic, ineffectual urging, irritable) and Graph. (fissures with oozing, obese chilly); Am-m. adds the glairy-mucus and crumbling-stool signatures [Boericke], [Boger].

Irritative urging in damp weather; urine may contain mucus shreds; burning in urethra after chills [Clarke]. In women, urging increases pre-menstrually with pelvic congestion; relief as flow becomes free [Hering]. No deep kidney signs; choose other salts if albuminous states predominate.

Desire for warm drinks that loosen throat mucus; aversion to cold drinks during catarrh (bring on distension); sweets aggravate catarrh in children; fat disagrees [Allen], [Boericke]. Hunger poor at night with cough, better by late morning; gas after pastry in sedentary subjects.

Prostatic fulness and haemorrhoids together in sedentary men; aching perineum on sitting long; better walking and warmth—organ-modality harmony [Clarke], [Boger]. Sexual desire sluggish during catarrhs.

Menses dark, clotted, often early or profuse; pelvic weight and sacral backache worse sitting and in damp weather; better warmth and motion—classical pattern [Hering], [Clarke]. Leucorrhoea acrid, excoriating, with glairy threads; bearing-down as if uterus would fall; must cross limbs—compare Sep. but with more mucus and less “emptiness” [Boericke], [Phatak]. Cough and catarrh aggravate around menses; relief follows a freer flow—portal-pelvic reciprocity again.

Stiff nape and sacral aching in damp cold; better warmth and gentle motion [Clarke]. Lumbo-sacral pain with piles or menses; cannot sit long; needs to move about. Tight hamstrings—feels as if cords too short—linking to sciatica and heel pains [Phatak], [Hering].

Sciatica—often right-sided though reported either side—with sensation as if tendons too short; worse sitting or lying, better walking and stretching; pains tearing, drawing, or stitching along posterior thigh; knee may give way [Hering], [Boericke], [Phatak]. Heel pains: sharp, bruised soreness on first stepping in the morning or after rest; must walk a while before easing—practical keynote [Boericke], [Clarke]. Joints crack on first motion; hands cold and numb in damp rooms. Cramps in calves at night; chilblain-like burning of toes in cold damp. Compare Rhus-t. (better continued motion but more restlessness), Coloc. (neuralgic, better hard pressure, bending double), Gnaph. (sciatica with numbness) [Boger].

Dry fissures (rhagades) that burn; chapped hands in cold damp weather; warts on hands; urticaria after exertion with heat and sweat; eczema sluggish to heal in obese chilly subjects—skin mirrors the systemic slowness [Clarke], [Boericke]. Boils slow to mature; thin, glairy exudation when opened.

Catarrh / Stringy Mucus

• Kali-bi. — Ropy strings, sinus ulceration, punched-out pains; Am-m.: glairy glassy slime, less fetor, more portal/pelvic links [Boericke], [Clarke].
• Hydrastis — Thick, yellow, ropy with rawness and fetor; Am-m. cleaner, glassy, chilly damp type [Clarke].

Damp-Weather Aggravation

• Nat-s. — Headache and chest worse damp with green mucus; Am-m. adds piles, black clots, heel/sciatica [Boger].
• Dulc. — After wetting, muscular/skin involvement; Am-m. is mucous/portal with glairy catarrh [Boericke].

Pelvic Congestion / Menses

• Sep. — Bearing-down, yellow-green leucorrhoea, indifference; Am-m. has black clots, glairy threads, more chilliness [Clarke].
• Calc-c. — Obese, chilly, sweats; broader endocrine/bone picture; Am-m. more mucus/portal and heel pains [Kent], [Tyler].

Rectum / Haemorrhoids

• Nux-v. — Spasmodic urging, irritable temperament; Am-m.: crumbling stool, glairy mucus, burning after stool [Boericke].
• Graph. — Fissures with honey-like oozing; Am-m. fissures with burning and glassy mucus [Clarke].

Sciatica / Heels / Better Motion

• Rhus-t. — Better continued motion, traumatic history; more restlessness; Am-m. heavier, congestive, heel-first-step pain [Boger].
• Coloc. — Neuralgic, crampy, better hard pressure/bending double; lacks mucus/portal pattern [Boericke].
• Gnaph. — Sciatica with numbness; Am-m. with shortened-tendon sensation and heel keynote [Boger].

• Complementary: Nat-s. — Climatic damp aggravation syndromes; Nat-s. for bilious lung/liver layer; Am-m. for glairy-mucus and portal/piles complex [Boger], [Clarke].
• Complementary: Graph. — Fissures/skin in the stout chilly; Am-m. covers mucous/rectal and heels; Graph. covers oozing skin and constipation residua [Boericke].
• Complementary: Kali-bi. — Alternation when stringiness shifts to true ropy plugs or sinus ulceration [Clarke].
• Follows well: Nux-v. in sedentary haemorrhoidal subjects once spasmodic urging subsides but glairy stool and burning remain [Boericke].
• Follows well: Hydrastis after fetid ropy catarrh when mucus becomes clearer yet stubbornly glairy [Clarke].
• Precedes well: Sep. in pelvic relaxation after Am-m. has relieved congestive clots and rectal burning [Clarke].
• Antidotes: Camph. (acute chill), Puls. (drugging with ammoniacal salts, clinical); warmth and motion antidote weather aggravation [Clarke], [Hughes].
• Incompatible / Cautions: None specific noted in classical sources; select on evolving mucus quality and modalities [Boericke], [Boger].

• Typical indications. Catarrhs with glairy, glassy mucus; chronic post-nasal drip with morning relief; haemorrhoids with burning and crumbling stool; pelvic congestion with black clots; sciatica better walking/stretching; heel pains on first stepping—especially in chilly, damp-aggravated, sedentary or stout patients [Hering], [Boericke], [Phatak], [Clarke].
• Potency & repetition. In congestive, sluggish states many authors used 6C–12C two to three times daily and tapered as mucus freed; for chronic pelvic/rectal or sciatic states 30C once daily or on alternate days; in obstinate catarrhs a 200C weekly may be used with watchful waiting—reduce frequency as morning relief appears [Boericke], [Tyler].
• Intercurrents. Consider Nat-s. in marshy climates, Tub. for recurrent damp-season catarrhs, Nux-v. where drugging or sedentary strain locks bowels [Boger], [Clarke].
• Adjuncts. Warm steam inhalation at night, warm drinks on waking, graded walking and hamstring stretches, avoidance of late-evening cold exposures; sitz baths for piles—adjuncts align with the remedy’s Better-warmth/motion [Clarke].
• Case pearls (one-liners).
  • Night cough with glassy plugs; Am-m. 30C nocte → morning free expectoration and quiet nights [Hering].
  • Piles with crumbling stool and burning; desk worker, damp-fog worse; Am-m. 12C t.d.s. → daily soft stool, less burning in a week [Clarke].
  • Sciatica “cords too short,” worse sitting, better walking; Am-m. 200C weekly → steady gain; heel pain faded by week 3 [Phatak].
  • Menses black clots with sacral weight and catarrh; Am-m. 30C q.d. per menses cycle → flow regularised, catarrh reduced [Boericke].

Mind

• Mind, indolence, aversion to exertion, sedentary people—Am-m. helps when motion improves other complaints. [Clarke].
• Irritability from trifles, worse night disturbance—links to night cough. [Hering].
• Anxiety about health during exertion, with palpitation—functional, obese chilly subjects. [Clarke].
• Dullness, sluggish comprehension in damp weather—clarifies in dry warmth. [Clarke].
• Hypochondriasis with portal congestion—improves after stool. [Boger].

Head

• Headache, frontal, with post-nasal catarrh; relieved after discharge. [Clarke].
• Headache, worse stooping; stitching in temples or forehead. [Boger].
• Heaviness of head in damp fog; better warm room. [Clarke].
• Heat of vertex during night cough; morning relief. [Allen].
• Headache alternating with piles or menses disorders. [Clarke].

Nose / Throat

• Coryza with glairy, glassy mucus, difficult to expel. [Hering], [Boericke].
• Post-nasal drip; constant hawking; morning relief. [Clarke].
• Obstruction in damp weather; better in dry warmth. [Clarke].
• Throat, plug of mucus, must hawk; better warm drinks. [Hering].
• Voice, hoarse at night from slime; better morning. [Boericke].

Chest / Respiration

• Cough, night, dry teasing, expectoration difficult till morning. [Hering], [Allen].
• Expectoration, tenacious, glassy, comes in the morning. [Boericke].
• Oppression in damp fog; better warm room. [Clarke].
• Stitches in chest on deep breathing/stooping; better lying on painful side. [Boger].
• Dyspnoea on first moving after sitting; eases with continued walking. [Boericke].

Abdomen / Rectum

• Portal congestion; fullness in hypochondria, stitching, worse stooping. [Boger].
• Constipation, stool crumbling, breaking on passage. [Hering], [Boericke].
• Mucus, glairy, after stool; burning and smarting; fissures/haemorrhoids. [Allen], [Clarke].
• Haemorrhoids, protruding, burning, itching; worse sitting, better walking. [Clarke].
• Diarrhoea after getting chilled; mucus stools. [Boericke].

Female

• Menses black, clotted; sacral pain; worse damp weather. [Hering], [Clarke].
• Leucorrhoea, acrid, glairy threads. [Boericke].
• Bearing-down pelvic sensation, must cross limbs. [Phatak].
• Catarrh worse around menses; improves as flow becomes free. [Clarke].

Extremities / Back

• Sciatica, tendons feel too short; worse sitting, better walking and stretching. [Hering], [Phatak].
• Pain in heels, first stepping in morning; must walk out of it. [Boericke].
• Stiff hamstrings; cracking joints on first motion. [Boericke].
• Sacral pain with piles or menses; worse sitting. [Clarke].
• Chilblains/itching in cold damp. [Clarke].

Skin / Generalities

• Fissures (rhagades), burning; chapped hands in cold damp. [Boericke].
• Urticaria after exertion and sweating. [Clarke].
• Obesity, flabby, chilly; complaints worse damp, better warmth and gentle motion. [Clarke], [Phatak].
• Tendency to take cold in fog; catarrh recurs every damp spell. [Boger].

Hering — The Guiding Symptoms of Our Materia Medica (1879–): provings/clinical confirmations; mucus, rectum, sciatica, modalities.
Allen, T. F. — Encyclopaedia of Pure Materia Medica (1874–79): proving data and toxicology; night cough, morning expectoration, rectal notes.
Clarke — A Dictionary of Practical Materia Medica (1900): general picture; portal/pelvic reciprocity; climate modalities; relationships.
Boericke — Pocket Manual of Homoeopathic Materia Medica (1901): keynotes—glairy mucus, crumbling stool, piles, black clots, sciatic/heel pains.
Boger — Synoptic Key of the Materia Medica (1915): modalities, generalities (damp fog worse, warmth/motion better), relationships.
Phatak — Concise Repertory of Homoeopathic Medicines (1977): shortened-tendon sensation; hamstrings; practical modalities.
Hughes — A Manual of Pharmacodynamics (1893): pharmacology of ammonium salts; expectorant/irritant rationale.
Kent — Lectures on Homoeopathic Materia Medica (1905): comparative notes (Calc-c., Sep., Graph., Nux-v., Rhus-t.) in relevant spheres.
Farrington — Clinical Materia Medica (1887): catarrhal therapeutics and portal states; comparisons (Kali-bi., Hydrastis).
Nash — Leaders in Homoeopathic Therapeutics (1898): congestive and catarrhal “leaders,” rectal hints in sedentary types.
Tyler — Homoeopathic Drug Pictures (1942): temperament and climate notes; practical dosing remarks for catarrhal states.
Dewey — Practical Homoeopathic Therapeutics (1901): haemorrhoids, pelvic and catarrhal groupings with comparisons.