What contributed to the historical description of chlorosis as the green sickness?

Answer

The pallor or yellowish-green tint of the skin due to circulatory and oxygenation issues

The green tint was the most distinct, though perhaps least common, visual feature reported. This appearance resulted from the complex interplay of factors, including poor circulation and the visibility of subsurface veins against exceptionally pale, sallow skin. This visual phenomenon led to the colloquial name green sickness, which prioritized the patient's outer appearance over the internal physiological reality of oxygen deprivation.

What contributed to the historical description of chlorosis as the green sickness?
humanchlorosisconditionsymptomanemia