'Boils' in the Bible

The soot will become dust over the entire land of Egypt, and it will become boils erupting into sores on people and animals throughout the land of Egypt."

So they took soot from the kiln and stood before Pharaoh. Then Moses threw it into the air,and it became boils producing running sores on people and animals.

The magicians were not able to stand before Moses because of the boils, because the boils were on the magicians and on all the Egyptians.