פירושים על שמואל א 5:6: רש״י, רמב״ם, אבן עזרא ועוד

And He devastated them. An expression [שְׁמָמָה] meaning desolation.

With hemorrhoids. The mesentery of the large intestine, a plague of the rectum. Mice would enter their recta, disembowel them, and crawl out.