Below are the main rubriks (i.e strongest indications or symptoms) of Mercurius Corrosivus in traditional homeopathic usage, not approved by the FDA.
Confusion and Vertigo.
Several attacks of vertigo,
Slight vertigo (fourth day),
Excessive vertigo (third day),
A kind of whirling vertigo, with good vision; almost entire loss of hearing, lasting from half an hour to an hour, especially at 9 P.M., on lying down, seldom during the day, with tearing pains in the occiput,
Dizzy whenever he lifted his head from the pillow (after two hours and a half),
Headache dull, dizzy,≡ more ...