A clot occurs when blood, which is usually liquid and flowing, thickens, becomes more gelatinous, and forms a clump. This is useful to halt excessive bleeding when you have an injury, but some blood clots can be harmful and even life-threatening.

Feeling dizzy? Here are the symptoms and treatments for dizziness, which can be caused by a range of medical issues from mild to more serious.

Running to the bathroom a lot lately? It could be ulcerative colitis, a chronic inflammatory bowel disease that can cause serious complications if left untreated. Here are the signs that should have you calling a GI doc for testing.