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