Below are the main rubriks (i.e strongest indications or symptoms) of Conium Mac in traditional homeopathic usage, not approved by the FDA.
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 ...