Below are the main rubriks (i.e strongest indications or symptoms) of Causticum in traditional homeopathic usage, not approved by the FDA.
Pain at a small spot on the vertex, as if bruised, only on touch.
Painless commotion in the whole head.
Pressive pain in right frontal eminence; dull, pressive headache.
Tension or itching on the scalp.
Stitches in the temples, worse from sitting or reading.
Throbbing and stitches in the vertex.
Sensation as of an empty space between the forehead and brain.≡ more ...