http://www.sciencecentric.com/news/article.php?q=08101666
"... 54-year-old patient with long standing ulcerative colitis [italics mine] who experienced fever, diarrhoea and abdominal pain 2 week after receiving corticosteroids as a treatment for severe cluster headaches..."
"The patient made complete recovery following appropriate treatment with anti-parasitic drug. The researchers note that this patient's case underscores the need to exclude even rare parasitic infections that may mimic a flare-up of ulcerative colitis."
I guess it might be prudent not to give in to diagnosis so quickly. Of course, even if you're paranoid it might take good fortune (a blessing) for someone to find what needs to be fixed.
Another day, another article. We can still hope.