Below are the main rubriks (i.e strongest indications or symptoms) of Merc Viv in traditional homeopathic usage, not approved by the FDA.
Almost Constantly moist
Persistent dryness of the skin contraindicate Mercurius Vivus
Excessive odorous viscid perspiration; worse, night
General tendency to free perspiration, but patient is not relieved thereby
Vesicular and pustular eruptions
Ulcers, irregular in shape, edges undefined
Pimples around the main eruption
Itching; worse from warmth of bed
Crusta lactea; yellowish-brown crusts, considerable suppuration
Glands swell every time patient takes cold
Orchitis ( Clemat.; haman.; Pulsatilla Puls.)≡ more ...