a boil

Exodus 9:9
It will become fine dust over all the land of Egypt, and festering boils will break out on man and beast throughout the land."

Exodus 15:26
saying, "If you will listen carefully to the voice of the LORD your God, and do what is right in His eyes, and pay attention to His commands, and keep all His statutes, then I will not bring on you any of the diseases I inflicted on the Egyptians. For I am the LORD who heals you."

2 Kings 20:7
Then Isaiah said, "Prepare a poultice of figs." So they brought it and applied it to the boil, and he recovered.

Job 2:7
So Satan went out from the presence of the LORD and infected Job with terrible boils from the soles of his feet to the crown of his head.

Psalm 38:3-7
There is no soundness in my body because of Your anger; there is no rest in my bones because of my sin. . . .

Isaiah 38:21
Now Isaiah had said, "Prepare a lump of pressed figs and apply it to the boil, and he will recover."