Revelation 16:2

So the first angel went away and poured his bowl on to the earth; and it brought a bad and painful sore upon the men who had on them the mark of the Wild Beast and worshipped his statue.

Treasury of Scripture Knowledge

Summary

And it shall become small dust in all the land of Egypt, and shall be a boil breaking forth with blains upon man, and upon beast, throughout all the land of Egypt.

Bible References

A boil

Revelation 16:2
So the first angel went away and poured his bowl on to the earth; and it brought a bad and painful sore upon the men who had on them the mark of the Wild Beast and worshipped his statue.