If there's no obvious reason for a black stool (such as food, a supplement, or a medication like Pepto-bismol), it could be time to look for blood in the stool. 1  A variety of medical reasons can cause black stools that are also tarry with a foul smell.
1 Lungs, kidneys or liver. Inflammation may cause pneumonia, bronchitis or other problems in your lungs; may lead to problems with kidney function; and may cause hepatitis or cirrhosis in your liver.  Lymph nodes. A small percentage of people with Sjogren's syndrome develop cancer of the lymph nodes (lymphoma).
Communities>Autoimmune Disorders >I hurt a lot, and I'm tired all the time. I hurt a lot, and I'm tired all the time. I would like to ask if Sjogren's syndrome is known for intense constant pain. I know it causes joint pain, but I have not been able to get any relief from joint and muscle pain for the last week. I am also experiencing hair loss, and a dry facial rash that looks like hives.