uc us ▁or ▁p us ▁wrapped ▁around ▁an ▁otherwise ▁normal ▁bow el ▁movement . ▁ ▁Rect al ▁dis charge ▁has ▁many ▁causes , ▁and ▁may ▁present ▁with ▁other ▁sympt oms : ▁▁ ▁St aining ▁of ▁under gar ments ▁ ▁Constant ▁feeling ▁of ▁d amp ness ▁around ▁an us ▁ ▁Fre quent ▁ur ge ▁to ▁open ▁bow els , ▁but ▁passage ▁of ▁only ▁small ▁amounts ▁of ▁m uc us ▁or ▁p us - like ▁liquid ▁rather ▁than ▁normal ▁f ec es ▁ ▁Rect al ▁pain ▁ ▁Rect al ▁mal odor , ▁when ▁the ▁dis charge ▁is ▁f oul - sm elling , ▁e . g . ▁associated ▁with ▁certain ▁in fe ctions ▁ ▁Pr ur it us ▁ani ▁ ▁Rect al ▁ble eding ▁ ▁Per ian al ▁er yth ema , ▁sw elling ▁and ▁tend ern ess ▁ ▁Pur ul ent ▁rect al ▁dis charge ▁( supp ur ative ▁dis charge ) ▁P us ▁usually ▁indicates ▁in fection . ▁Fre qu ently ▁medical ▁sources ▁do ▁not ▁differenti ate ▁between ▁the ▁two ▁types ▁of ▁dis charge , ▁instead ▁using ▁the ▁general ▁term ▁m uc op ur ul ent ▁dis charge , ▁which , ▁strictly ▁speaking , ▁should ▁only ▁be ▁used ▁to ▁refer ▁to ▁a ▁dis charge ▁that ▁contains ▁both ▁m uc us ▁and ▁p us . ▁Pur ul ent ▁dis charg es ▁may ▁be ▁blood - stre aked . ▁ ▁M uc ous ▁rect al ▁dis charge ▁( m uc in ous ▁rect al ▁dis charge , ▁mu co id ▁rect al ▁dis charge )