Fecal Impaction. Fecal impaction is the formation of a hard bolus of digestive residues which cannot be expelled. This occurs frequently in patients who are bedridden and particularly in the aged. It occurs in states of dehydration
The incidence of pilonidal disease is highest in white males (3:1 male:female ratio) between ages 15 and 40, with a peak incidence between 16 and 20 years. It rarely occurs in patients more than 50 years old.