Fecal impaction is a mass of dry, hard stool, that has resulted from a chronic constipation.
Abdominal cramps, rectal bleeding, small thin stools are all symptoms of fecal impaction.
If your stool consistency and frequency have changed recently, is good to ask your doctor for referral for colonoscopy exam (to exclude colon cancer as a reason for impaction)
If you are chronic sufferer try to find out together with your physician what causes that (your poor diet, taking certain meds, neurological disorders)
Best wishes!
Marija