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Materia Medica Viva Volume 6 – page 1243

connected with fright or anxiety in the dreams. Lying down, especially on the left side, may also provoke symptoms.
Worse: many symptoms are worse from lying down, lying on the left side, 11 a.m. or 11 p.m., at night, from going upstairs, from the sun, from damp and from noise. Many of the complaints of Cactus are aggravated or induced by irregularities of breathing.
Better: from continued but gentle motion; from the open air; vertex headache better by pressure on the vertex.
Vertigo
Vertigo from congestion: face red, bloated; pulsation in the brain; mental imbalance, anxiety. Unsteadiness of gait, amounting almost to staggering, and a reeling sensation.
Vertigo brought on by physical exertion, turning in bed, stooping, rising from a recumbent position or from deep inspiration.
Head
The headaches often come on from congestion of the head or brain. They are, therefore, violent and accompanied by intense heat in the head. Heat in the head from mental exertion is a strong symptom. The headaches often have a constricting or pressing quality.
Heavy pain, like a weight, on the vertex. This pain is diminished by pressure. It is made worse by the sound of talking, by any noise, or by strong light. The sound of voices seems to go through the head, and the brain is so sensitive that the sound feels like a material substance hurled at the brain, much like in Theridion. The pressure may feel as if the top of the head will be crushed in, or like a pressure that is pushing outward (‘out of both ears’, as expressed by Ritter). The pressive headaches in the vertex may develop as a result of menorrhagia or at the time of menopause in women (Lippe).
There can be a feeling as if the head were compressed in a vice and will burst
open from the severity of the pain.