I looked down at my underwear and there was something brown. and i mean brown. i have ibs so do i have leakage or something? what does this mean?

Skid marks or more?: Occasional incontinence of stool with fecal leakage is common, but loss of bowel control particularly without warning may signal a significant infection, inflammatory problem, maldigestive concern, anorectal or neurologic disorder. Sometimes, particularly in youths, the condition is behavioral. Often, anal manometry followed by biofeedback can be curative without surgery or medication.