Call 911 or other emergency services immediately if the person has been bleeding from the anus and has signs of shock, which could mean that a diverticular pouch is bleeding (diverticular bleeding). Signs of shock include passing out, or feeling very dizzy, weak, or less alert.
Call your doctor immediately if you have pain in the abdomen that is in one spot (as opposed to general pain in the abdomen), especially if you also have:
The symptoms of diverticulitis are:
Severe abdominal pain and cramping that is usually worse on the left side and increases when the area is touched
Chills or fever
Constipation, thin stools, or diarrhea
Rectal bleeding (rare)
Pain in the abdomen that becomes worse when you move or cough.
A stool that is mostly blood (more than a few streaks of blood on the stool). Blood in the stool may appear as reddish or maroon-colored liquid or clots or may produce a black stool that looks like tar.
Passed gas or stool from your urethra while urinating. This likely means that you have an opening (fistula) between the bowel and the urinary tract.
Call your doctor if you:
Have cramping pain that does not get better when you have a bowel movement or pass gas.
It is not uncommon to have bloating, gas pressure, or mild abdominal (belly) pain. These can be caused by eating certain foods or by stress. Home treatment usually will take care of these symptoms. If home treatment does not help or if the symptoms become worse, see your doctor.
Who to see
Health professionals who can diagnose and prescribe treatment for diverticulitis include: