Chronic diarrhea is a common symptom of both. However constipation can be a problem too. In ulcerative colitis, constipation can be a sign of inflammation in the rectum and in Crohn's disease it can be a sign of an obstruction in the small intestine.
Does the  go before or after the period. I was taught in school, when I was growing up, that the ending quotation mark always goes after the period. However, in college, I'm noticing that's not always what is happening. Same as when I sometimes read news articles. She took her to the party and she remembered saying, have fun.
Proper placement of the period with quotation marks. If a sentence ends with quoted material, the period is placed inside the closing quotation mark, even if the period is not part of the original quotation. Note, however, that if the quoted material itself ends with a question mark or exclamation point, the period is omitted.