Where prices increase very rapidly and out of control

Emphysema

The country's currency becomes nearly worthless.

Hyperinflation is an extremely rapid or out of control inflation and there is no precise numerical definition to hyperinflation. Hyperinflation is a situation where the price increases are so out of control that the concept of inflation is meaningless.

Lung hyperinflation stimulates pulmonary stretch receptors. A person who experience lung hyperinflation can end up having COPD or chronic obstructive pulmonary disease.