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Materia Medica Viva Volume 3 – page 654

elimination, they reduce their diet to a very small number of tolerated foods.
It is important to remember that to justify the prescription of Asarum a wide range of the remedy’s symptomatology should be present; it would be improper to give Asarum to everyone who is sensitive to chemicals. The nervous hypersensitivity must be present, especially of the auditory nerve. Excessive sensibility of all the nerves when merely thinking (and this he must continually) that some one might with the finger tip or nail scratch even lightly on linen or similar material; a most disagreeable sensation thrills through him, arresting momentarily all his thoughts and actions. So weak he staggers, unless his mind is on his walking. Sweats easily, particularly on upper part of body.
Head
Headaches that feel as if the whole head is compressed, as if under tension. There is also tension felt in the scalp, which feels sensitive when combing the hair. Confusion in the head, better on walking. The brain feels as if pressed in certain areas with a heavy object, preventing thinking. Pressure in forehead affecting the eyes (Gels ). Warm feeling in the face, ameliorated by washing with cold water. By washing the pain in head also is better.
Feels pulsation of arteries in occiput. Intense, compressive headache in left temple, and behind ears; more violent when walking or shaking head; better when sitting. Throbbing headache in morning, early, when rising. Headache, with pain in both eyes, and nausea. Pain externally on sides of head. Itching, beginning with fine stitches, below left temple.
Eye
Another common state is that of inflammation of the eyes – chronic inflammation of eyelids, chronic conjunctivitis with lachrymation and burning. Such inflammations may go on and on, refractory to such remedies as Clematis, Euphrasia, Graphites, etc. In such conditions, when the special state of sensitivity exists which has been described, think of Asarum.
Cannot read with left eye, aggravated by bright light. The cold air is pleasant to eyes; sunshine, light and wind are intolerable. Thickening of cornea.
Sharp pain over left eye, with running of tears and sensitiveness of sight.