creeping crud

Noun

 * 1)  Any of various diseases.
 * 2) * 1946, Belleau Wood (Aircraft carrier), "Flight Quarters.": The War Story of the U.S.S. Belleau Wood (page 67)
 * In the heat of the tropics a variety of skin irritations — collectively dubbed the “creeping crud” — gripped with unrelenting tenacity the hides of the tender.