My mother, who is diabetic, has been to doctors because 20-25 days of the month, she eats breakfast, then within a half hour, she develops stomach cramps and pain and uncontrollable diarrhea. then goes away early afternoon. happens at breakfast only?

She needs to see an endocrinologist or gastroenterologist for a thorough review and exam and testing for these symptoms are unusual . With proper investigation and treatment she will be OK

Ask about gastric paresis from diabetes and and gall bladder. Try changing what she eats for breakfast. Keep diary to see if it is something she is eating. Share with her Dr.