• Vaso-motor centre & arterial tree — vehement cerebral congestion, throbbing carotids, flushed face, fulness in head; later arterial depression with slow, soft pulse (see Head, Heart, Fever) [Hughes], [Clarke], [Farrington].
• Heart & vagus — bradycardia, intermittence, faintness, precordial sinking, pallor after the storm; a keynote transition from bounding to failing (see Heart, Generalities) [Allen], [Hale].
• Stomach/medullary emetic centre — persistent nausea and vomiting, often projectile, with profuse salivation and cold sweat; worse the least motion (see Stomach, Perspiration) [Hale], [Allen].
• Lungs & serous surfaces — early pneumonia/pleuro-pneumonia with intense vascular excitement and dyspnoea; later adynamia (see Respiration, Chest, Fever) [Clarke], [Farrington], [Boger].
• Brain & meninges — threatened apoplexy, congestive headaches, blindness/blur during surges; spasms/convulsions in parturient or febrile storms (see Head, Mind) [Hering], [Clarke].
• Larynx/glottis — spasm of glottis, croup/laryngitis with livid face and arterial tumult (see Respiration) [Hering], [Allen].
• Female pelvis — puerperal eclampsia/convulsions with vomiting or epigastric aura, congestive head; albuminuria not infrequent (see Female) [Farrington], [Clarke].
• Retina/optic circulation — hyperaemic dimness, photophobia in vascular storms (see Eyes) [Hale], [Clarke].
• Skin & sweat glands — cold, clammy sweat with sinking; alternates with burning heat of head/face (see Perspiration, Chill/Heat) [Allen], [Boericke].

• Absolute rest; lying quite still—the least motion renews nausea and faintness (see Stomach, Generalities) [Hale], [Allen].
• Cold applications to head; cool air—relieves throbbing and flushing (see Head) [Clarke], [Farrington].
• Vomiting after long retching—temporary ease of head and præcordial oppression (see Stomach, Head) [Allen], [Hale].
• Head high; shoulders raised—lessens carotid throb and dyspnoea (see Head, Respiration) [Clarke].
• Loosening clothing—reduces præcordial and epigastric constriction (see Heart, Stomach) [Hale].
• Gentle fanning—revives during sinking fits (see Generalities) [Allen].
• Sweating breaking through—fever head-tension declines afterward (see Fever, Perspiration) [Boericke].
• Sips of cold water or ice chips—momentary ease of nausea/syncope (see Stomach) [Hale].

• The least motion—turning in bed, rising, or carriage travel → intense nausea, vertigo, and vomiting (central keynote) [Hale], [Allen].
• Heat of room, hot coverings, sun heat—exalts cerebral congestion and carotid throbbing (see Head, Fever) [Clarke], [Farrington].
• Exertion; ascending—brings on faintness, irregular slow pulse, dyspnoea (see Heart, Respiration) [Allen].
• Pressure at epigastrium—nausea and sinking aggravated (see Stomach) [Hale].
• Sudden jar; stooping—arches back the vascular storm in head; giddiness (see Head) [Clarke].
• Night towards morning—adynamia with cold sweat and slow, feeble pulse (see Generalities) [Allen].
• During pregnancy/parturition—convulsive tendency with vomiting (see Female) [Farrington].
• Warm drinks or warm room—renew nausea/retching; prefers cold sips (see Food & Drink) [Hale].

During the arterial storm the patient is anxious, hurried, and distressed, with dread of the head “bursting”; he begs for air and cold to the head [Clarke]. As nausea mounts with the least motion, irritability alternates with apathy; speech slows as faintness approaches, and he answers reluctantly, “let me lie still” (cross-links Stomach, Generalities) [Allen], [Hale]. Delirium may be noisy in the congestive stage (face crimson, eyes injected), changing to low muttering as the pulse falls and sweat turns clammy [Hering], [Clarke]. Fear of death is less vivid than in Acon.; rather a sinking despair with indifference between retchings is recorded [Farrington]. In puerperal storms, fury or maniacal struggle may prelude spasms, often with a gastric aura (see Female) [Hering], [Clarke]. After vomiting there is brief lucidity and relief of head pressure, then recurrence with motion or warmth (echoes Modalities) [Allen]. Children in laryngeal attacks clutch the larynx, eyes staring, terrified by the want of air; afterwards they lie pale, sweating and apathetic (see Respiration, Perspiration) [Hering]. [Proving][Toxicology][Clinical]

Cardinal field for vascular excess. Fulness and throbbing, vertex weight, carotids hammering, crimson or dusky face, eyes injected, head feels as if it would explode in a warm room [Clarke], [Farrington]. The least jar or stooping increases the throb; the patient seeks the coldest air and begs for the head to be kept cool (cross-link Better cold applications) [Clarke]. With the nausea the head swims; turning in bed produces instant giddiness with deathly sickness—a decisive modality [Hale], [Allen]. Vision blurs at the height of congestion; sparks or darkness threaten; a true apoplectic facies may show—thick speech, heavy face—yet often recedes as vomiting relieves pressure [Hering], [Clarke]. Later, in the depression phase, headache becomes a dull, empty ache with pallor and cold sweat of forehead (micro-comparison: Verat.-alb. has colder surface, rice-water stools, and collapse; Verat-v. centres on vascular storm → vagal sink) [Farrington], [Boericke]. [Proving][Toxicology][Clinical]