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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yellow, jaundice, etc.
Dry; inability to perspire (see inactivity)
wart-like growth; dry
wart-like growth; moist
cauliflower-like fungus; syphilitic
ulcers; discharges; like hard fat
Like insects crawling on skin
Out-breaks on skin
psoriasis (red patches with silvery scales)
tubercles (nodules, knob-like lumps)
Pain; excoriated (as if grazed, chaffed)≡ more ...