Zizia aurea, Meadow Parsnip (Thaspium aureum, Zizia).

Hysteria, epilepsy, chorea, hypochondriasis, come within the sphere of this remedy.
Mind.--Suicidal; depressed; laughing and weeping moods alternate.
Head.--Pressure on top, in right temple, associated with backache.
Male.--Great lassitude following coitus. Sexual power increased.
Female.--Intermittent neuralgia of left ovary. Acrid, profuse leucorrhoea, with retarded menses.
Respiratory.--Dry cough, with stitches in chest. Dyspnoea.
Extremities.--Unusual tired feeling. Chorea, especially during sleep. Fidgety legs (Tarant). Lameness in arms and spasmodic twitching.
Modalities.--Worse, during sleep.
Relationship.--Compare: Agar; Stram; Tarant; Cicuta; Aethusa.
Dose.--Tincture, to third potency.

Boericke's Materia Medica, 1901, was written by William Boericke. Excerpt: The Tinctures.