Blood Clots, all types  Blood clots  What are blood clots?   If
abnormal clotting occurs, it can prevent oxygen and nutrients
from being delivered to healthy tissue and cause that tissue to
die. If a blood clot breaks loose and travels to the heart or
lung, this can also cause serious complications.  What are the
symptoms of blood clots?  Symptoms of blood clots vary depending
upon where the clot is located.    • Blood clots in the brain
may cause visual disturbances, weakness, seizures, or speech
impairment.   • Blood clots in the arm or leg may cause sudden
pain, swelling, or tenderness.   • A blood clot in the lung may
cause sharp chest pain, rapid pulse, bloody cough, shortness of
breath, sweating, or fever.   • A blood clot in the abdomen may
cause severe abdominal pain, vomiting or diarrhea.  Sometimes a
blood clot forms in a central venous catheter, often called a
central line, where medication is delivered for a patient with
cancer or another serious condition. Symptoms of a central
venous catheter cl