DCHP-1 Online
prairie itch 
a form of dermatitis caused by a fresh-water hydra encountered in certain sloughs on the prairie (def. 2a).
See also: prairie (def. 2a) salt-water itch
- 1904-8 (1955) Our experience with the prairie itch was a case in point.
- 1961 I had the measles and the prairie itch once and the mumps on both sides. I had the black crowing, Ma says, but I never had the worst of all.
- 1904-8 (1955) Our experience with the prairie itch was a case in point.