Below are the main rubriks (i.e strongest indications or symptoms) of Argentum Nitricum in traditional homeopathic usage, not approved by the FDA.
High notes cause cough
Suffocative cough, as if from a hair in throat
Chest feels as if a bar were around it
Palpitation, pulse irregular and intermittent; worse lying on Right side; (Alumen Alumen.) Painful spots in chest
Angina pectoris, nightly worse
Many people in a room seem to take away his breath.≡ more ...