Try having diarrhea and pain every time you eat or drink.  Then add 10 to 15 bowel movements a day, sometimes accidents included.  Add again, joint pain and aches that make you feel like a very old person, even if you are young.  Then add weight loss due to lack of eating and diarrhea.  Lastly, sleep problems.  Now we could add a lot more than that but we will leave it as is.  Consider living your daily life, everyday with all of these issues.  Will you sometimes say or spell things wrong, answer less quickly than you used to or respond wrong?  My experience is yes, consider people who live everyday with a chronic or debilitating illness.  When you come across someone regularly or once in a while in this position, give them a break.  Add a bit more kindness to how you treat them, be less quick to be critical.  Offer a kind word.  Someday you may to be in the same position and your kindness will be payed forward.