All the diseases of Egypt: this means all the plagues God sent on the Egyptians; see verse 27; 7.15.

They shall cleave to you: a vivid way of saying that the Israelites will not be healed; these illnesses are incurable.

Quoted with permission from Bratcher, Robert G. and Hatton, Howard A. A Handbook on Deuteronomy. (UBS Helps for Translators). New York: UBS, 2000. For this and other handbooks for translators see here .