And as a practical matter, it doesn't really clarify the pronunciation of Nguyen unless one knows which English pronunciation of ng you're referring to. I'm just teasing with this pedantry, of course; I understood what you meant. But then, I already knew how to pronounce Nguyen.
What are bruises? Bruises are bluish or purple-coloured patches that appear on the skin when tiny blood vessels, called capillaries, break or burst underneath. The blood from the capillaries leaks into the soft tissue under your skin, causing the discolouration.
Quick Answer. Unexplained bruising can be caused by aspirin or blood thinners, infections that cause toxins to accumulate in blood, hemophilia, von Willebrand's disease, lupus and liver disease, according to WebMD. Certain types of cancer, including Hodgkin's disease, multiple myeloma and leukemia can also cause unexplained bruising explains WebMD.