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Materia Medica Viva Volume 2 – page 268

diarrhea and vomiting, may arise during the menses. Hysterical women with a tendency to faint.
There is also aggravation from motion, from chewing or pressing the teeth together, and from bending down. The time of greatest aggravation is between 3 and 4 a.m., leading to ready confusion with Kali carbonicum in cases involving lung pathology. There is amelioration by lying down, especially on the abdomen, and by becoming warm in bed. Better lying on the painful side.
Vertigo
Vertigo on reading in a sitting position, in the morning or the evening.
Head
Pulsating, beating, throbbing headaches, mostly in the forehead, after dinner; after eating; while riding in cold air. Congestive headaches during wet weather, aggravated by walking in the open air. The most characteristic headache is a pressive one situated at the root of the nose which gives the impression as if the forehead would burst. A warm room ameliorates a pulsating sensation in the head. The headaches are worse when stepping and in the morning on waking, better with pressure and in a warm room. Headache with nausea.
Sensation as if the brain would ooze out through the forehead and eyes. The brain seems loose. When biting the teeth together or when chewing, there are shocks which pass through the head, eyes, ears and nose.
Eye
Burning of the eyes with aversion to light. Sensation as if there were sand in the eyes. Right eye feels as if bathed in hot water. Eye strain. After strain, muscular asthenopia. Pain in the eyes, better from afternoon sleep. Lids become swollen, dry and cracked from the excoriating fluid discharged from the eyes. Eyes bloodshot with lachrymation.