Below are the main rubriks (i.e strongest indications or symptoms) of Conium Mac in traditional homeopathic usage, not approved by the FDA.
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Headache as if the head were too full and would burst; morning when awakening.
Stitching pain from within outward, in the forehead, morning, or at noon.
Tearing headache, with nausea.
Pain in the occiput, with every pulse, as if pierced with a knife.
Tearing in the head, must lie down.
Sensation in right halt of brain as of a large foreign body.≡ more ...