Below are the main rubriks (i.e strongest indications or symptoms) of Mercurius Corrosivus in traditional homeopathic usage, not approved by the FDA.
Anxiety preventing sleep.
Weak intellect; he stares at persons who talk to him, and does not understand them.
Ill-humoured, during which nothing pleases; alternating with hilarity.
Stupor and delirium.≡ more ...