• Vascular system and serous membranes. Sudden congestive storms—dry heat, bounding pulse, first stage of inflammation—before exudation sets in; think pleura, pericardium, synovium. See Fever, Chest, and Back. [Kent], [Clarke]
• Peripheral sensory nerves. Tingling, formication, numbness allied to aconitine’s sodium-channel effects; neuralgias (trigeminal, intercostal) with anxiety. See Face and Extremities. [Allen], [Hughes]
• Mind and autonomic reactivity. Panic, fear of death, shock responses with sympathetic overdrive (tachycardia, dry mouth). See Mind and Heart. [Hering], [Kent]
• Respiratory tract. Early croup, laryngitis, sudden hoarseness from cold dry wind; short, hot breaths with anxiety. See Throat and Respiration. [Boericke], [Clarke]
• Heart. Palpitations, tachyarrhythmias from fright; precordial anxiety with fear. See Heart. [Allen], [Kent]
• Skin and thermoregulation. Dry heat, one cheek red, the other pale; sudden chills from exposure; prickling. See Fever and Skin. [Hering], [Clarke]
• Gastrointestinal tract. Acute gastritis/enteritis at onset with burning, thirst for cold water, anxiety. See Stomach/Abdomen. [Allen], [Nash]
• Musculoskeletal. Acute synovitis, myalgia after exposure to cold, especially dry wind; restless tossing. See Extremities. [Kent], [Boger]
• Eyes. Photophobia, acute congestion after cold wind; gritty, hot eyes with anxiety. See Eyes. [Hering], [Clarke]
• Ear, nose, throat mucosa. Sudden catarrh, burning dryness, coryza from cold drafts; “first hours” picture. See Nose and Throat. [Phatak], [Boericke]
• Obstetrics/paediatrics (reactivity). Violent fevers of children, night terrors after fright; early croup. Cross-refer Sleep, Fever, Throat. [Nash], [Clarke]

• Open, cool air; stepping outside the hot room eases anxiety and head throbbing. [Hering]
• Resting quietly for a moment (though general restlessness persists); transient easing of palpitations. [Kent]
• Gentle sweat breaking through after a dry, hot stage; fever lessens once perspiration starts. [Clarke]
• Cold water in small sips for burning heat and thirst. [Allen]
• Sitting propped for dyspnoea; laryngeal tightness feels less suffocating. [Boericke]
• After reassurance; fear of death abates when convinced they will live—diagnostic keynote. [Kent]
• Closing eyes in photophobia; darkness soothes hot, congested eyes. [Hering]
• Warm compress to a neuralgic point after initial cold-wind exposure (briefly). [Phatak]
• Early intervention (“first hours”)—timely dosing truncates the storm. [Nash]
• Quiet, absence of startling noises; autonomic surge settles. [Boger]
• Passing urine (when anxious palpitations have a reflex spasm element). [Clarke]
• Lying on back with shoulders raised—less cardiac oppression. [Kent]

• Dry cold wind; exposure to drafts; suddenly chilled after being overheated. [Hering], [Clarke]
• Fright, shock, startling events; news of calamity. [Kent], [Nash]
• Night, especially after midnight (towards 1 a.m.); anxiety peaks. [Hering]
• Warm room and crowding; heat intensifies throbbing, irritability, dyspnoea. [Clarke]
• Sudden suppression of perspiration; driving the sweat “in” renews fever. [Allen]
• Motion during neuralgia; yet patient is restless and cannot keep still. [Kent]
• Noise, music, being startled; hyperaesthesia of senses. [Hahnemann], [Boger]
• Touch and pressure on inflamed parts; acute serous/mucosal tenderness. [Hering]
• Lying on left side in palpitations—precordial anxiety increases. [Kent]
• After shock to the system (dental procedure fright, near-accident); reactive panic with heat. [Nash]
• Suppressed catarrhal discharges; “first stage” locked in. [Clarke]
• Evening towards nightfall—apprehension of death intensifies. [Boericke]

Sudden, violent, and overwhelming anxiety with fear of death is the classic picture: the patient predicts the hour of dying, begs for a doctor, and cannot be reassured—until clear, authoritative comfort momentarily steadies them (this relief from reassurance is itself a keynote, tallying with the “Better for reassurance” modality above). There is extreme restlessness—they toss about, cannot sit or lie still, yet motion aggravates pains—revealing a paradox of autonomic overdrive and sensory hyperaesthesia. The aetiology is usually immediate: fright, shock, a sudden chill in dry wind, or an accident narrowly avoided; the psyche remains in “red alert,” with startle to the least noise. Hypervigilance, intolerance of music or conversation, and a desire to escape the room are frequent. The anguish may be accompanied by heat of face (one cheek red, the other pale) and dryness—physiology matching psychology. In children, night terrors after a scare, with screaming and pointing as if at spectres, fit Acon. acutely. Compare Arg-n. (anticipatory anxiety with diarrhoea and phobias of bridges) and Opium (fright but stupefaction, not anxious heat); Acon. is the taut, hot, awake panic. Case: a patient after a near-miss car crash, pacing, face burning, convinced of imminent heart failure, settled rapidly with Acon. 200C. [Hahnemann], [Hering], [Kent], [Nash], [Boericke]

Headache comes with violent congestion: throbbing temples, hot scalp, and a sensation as if the brain will burst, aggravated by heat, warm room, and the least noise, and relieved somewhat by cool air—reflecting the modalities already noted. It often heralds the first stage of febrile illness or follows exposure to cold wind on a hot, sweaty body. The patient wants to lie still but cannot; restlessness compels shifting, which aggravates the throbbing—a typical Acon. paradox. The scalp may be sensitive, hair feels tender, and sweat is absent until the storm abates. Compare Bell. (red, congested head, delirium, but often brilliant eyes and throbbing carotids with less fear of death) and Ferr-phos. (milder, paler first stage without the terrifying anxiety). [Allen], [Hering], [Kent], [Clarke]