How frequent does pale/white stool have to be to cause concern? is it just once and you should call a doctor immediately? or does it need to occur with some regularity? also, can ibs cause pale stool? thanks?

A pale stool can be related to diet changes or problems with digestion. There are more details needed to address your concerns. Pale stools may need to be investigated properly if it persists and is not related to some diet changes. I cannot provide you with specific advice or properly address your questions without more details. You cna talk talk to a doctor using telemedicine