Is it possible for one person to have both celiac disease and ulcerative colitis?

Yes. Yes, absolutely. There are some patients given initial diagnosis of either ulcerative colitis or crohn's disease that later turn out to have celiac disease and the former goes into remission with a gluten-free diet. If you are uncertain of risk, there are genetic tests (dq2/dq8) to determine if you have a high probability of reacting to gluten.

Related Questions

Can there be a relation to celiac and ulcerative colitis?

UC and gluten. Gluten free or low gluten diets often benefit uc patients. Gluten is a wheat protein so dropping wheat or replacing with potato bread, rice or rye might help. Adding a high fiber bowel regimen, multivitamin and no nicotine can also help. Good luck.

I have celiac and ulcerative colitis now I had 3 episodes of tarry stools within 3 weeks also loss of appetite not wanting to eat, what could it be?

See details. This is likely an upper GI bleed if your stools are truly black and just not dark brown. If so, this is an urgent problem. See your gastroenterologist ASAP or go to the ER.

What are symptoms of Crohn's disease and ulcerative colitis?

See below. Ibd usually presents with lots of diarrhea (mucousy, bloody or just loose). Some have bad pain, cramping, nausea, wt loss etc.
Many possibilities. There are many potential symptoms: weight loss, diarrhea, abdominal pain, vomiting, iron deficiency, fatigue, blood in the stool, arthritis, fever. Any of these could be symptoms. Its a tricky disease unfortunately.

What is the disparity between Crohn's disease and ulcerative colitis?

Difficult problem. Both crohn's and ulcerative colitis are difficult problems with diagnosis made at biopsy. The surgical procedures include resection, ostomy, anastomosis and are added when medical therapy alone is not able to control. Neither disease is curable, both are managed with medication and diet with avoidance of irritants like gluten, fat, lactose. Bile binders can help. Be well.
Unclear question. If by disparity you mean "the difference between" then: ulcerative colitis affects just the large intestine (colon) and causes bloody diarrhea and abdominal pain. The inflammation is superficial on the bowel lining. Crohns causes deep inflammation through the whole bowel wall and affects anywhere in the GI tract from lips to anus. Symptoms of crohns can be more severe and can cause bowel obstruction.

Many people in my support forum insist they are suffering from Crohn's disease and ulcerative colitis. I know it's possible, but how likely is it?

Very possible. When people are posting on specialize forums for specific diseases, they are looking for answers. So often they find comfort in knowing that there is a community of people who have the same conditions, and are who are suffering likewise. So that they can support each other, share treatment plans that has worked, share treatment plants that haven't worked, and keep informed of the latest treatments.
Possible, but off... Many people fall victims to information abundance but lacking ability to infer anxiety & fear getting Crohn's or ulcerative colitis from the symptoms, just like many medical students imagine they may have certain diseases during their course of studying medicine. Besides, knowledge without common sense & wisdom will miss the points of adequate care. So, yes or no - probably most of times.

Is ulcerative colitis treated differently when the cause of the disease is different? If so what are the options?

Standard treatments. The treatments for ulcerative colitis are all directed at the inflammation of the lining of the intestine. Uc is treated differently more on where it is located. Rectal uc can be treated with suppositories or enemas. Uc higher in the intestine is usually treated with oral medicines or injectibles. Your gastroenterologist should be able to answer most of your questions.
No. We in the medical community do not know the exact cause of uc. It is an autoimmune/inflammatory process that attacks the colon. Treatment is aimed at reducing inflammation with medications or surgery to remove the colon. Uc patients also require frequent colonoscopies to screen for colon cancer.

What cures ulcerative colitis (or digestive diseases) in the shortest amount of time?

Not known. Exact cause of ulcerative colitis is not known. It happens randomly and not associated with any particular etiologic agent.