Pustules

Adults working with PCBs were also 'prone to developing a skin condition called chloracne, which produces pustules and cysts'.

In 1936 a U.S. Public Health Service official described the wife and child of a worker from the Monsanto Industrial Chemical Company who exhibited blackheads and pustules on their skin.

In this characterization, he is grotesquely overweight, dressed in filthy garments and covered in large, black pustules which require constant draining and treatment.

Rust is most commonly seen as coloured powder, composed of tiny aeciospores which land on vegetation producing pustules, or uredia, that form on the lower surfaces.

The transferral of the disease was first observed in dairymaids who touched the udders of infected cows and consequently developed the signature pustules on their hands.