ACONITINUM.

General Action.
Alkaloid obtained from the roots and stems of Aconitum napellus, presenting rapid and intense symptoms chiefly characterised by constrictive burning sensations ascending from the extremities; initial local application produces heat followed by burning pains, acute pricking and pruritus, ending in numbness and anaesthesia; frequently symptoms develop from below upwards; all symptoms > by vomiting; useful in hydrophobia of convulsive or paralytic type; recovery, if it occurs, is rapid and complete; < by mental exertion, agitation, touch; nausea produced by upright posture.(M)

Mind.
Anxiety with fear of death; intellect clear though ideas flow slowly, attention impaired; sensation as if dreaming or stupefied; forgetfulness with tremulous extremities.

Head.
Vertigo with confusion and roaring in ears, leading to almost instant collapse; fullness of head with inability to support it; headache with stabbing pains in face and head, sometimes accompanied by vomiting (hemicrania cured).

Eyes.
Tired sensation; pupils dilated, insensible to light; complete blindness with dilated pupils, vision returning as they contract; blurred vision with vertigo and muscular weakness.(M)

Ears.
Pressure and roaring noises; complete deafness.

Face.
Fullness of cheeks and temples changing to painful tension, tingling and pricking; tense, swollen appearance; peculiar drawing, stretching and pressure along trigeminal distribution, alternating with occipital stabbing, progressing to sustained severe neuralgic pain; trigeminal neuralgia with supraorbital shooting pains causing vomiting; subsequent tonic facial contractions, trismus, then clonic convulsions; hypocratic facies.

Mouth.
Burning of lips and tongue tip; dry, acrid, constrictive sensation in mouth and fauces; rigid tongue; foul, bitter taste or complete loss of taste; increased tooth sensitivity; salivation.

Throat.
Burning constriction extending from mouth to stomach; each swallow followed by hydrophobic-like spasm not renewed by sight of water; difficulty swallowing with pain in neck and parotid region, requiring manual support (M); burning in fauces as if a hot coal present (M).

Stomach.
Immediate eructations; severe vomiting every two to three minutes initiated by sudden abdominal muscle contraction accompanied by loud cries; vomiting ameliorates all symptoms; marked heat in stomach region; nausea induced by erect posture (M).

Abdomen.
Intestinal rumbling occurring immediately in some or two hours after dose in others; sudden diaphragmatic contraction; post-mortem: enlarged dark liver and spleen.

Urinary Organs.
Copious diuresis; difficulty and pain in micturition, occasional retention with hypogastric distress (M).

Male Sexual Organs.
Unusual nocturnal emissions in experimental subjects.

Respiratory Organs.
Oppressive dyspnoea; precordial constrictive anguish; sighing respiration.

Heart.
On entering warmth pulse at first rapid then small, weak, intermittent; heart sounds audible only at apex.

Extremities.
Weakness, trembling, burning, tingling, pricking and numbness; subsequent relaxation following convulsive exertion.

Skin.
General tingling.

Sleep.
Somnolence with uneasy, tossing sleep.

Fever.
Surface cold, moist and very pale; intense chill followed by sudden heat of head and face extending over body, most marked in stomach region, accompanied by sweat.