In the case of hematochezia, the blood may coat the stool, be mixed in with the stool, or even be passed by itself without any stool at all. Potential causes of black colored stools include: acidified blood (blood from higher in the digestive tract)
The most common symptoms of a meniscus tear are: 1  Knee pain. 2  Swelling of the knee. 3  Tenderness when pressing on the meniscus.  Popping or clicking within the 1  knee. Limited motion of the knee joint.
About signs and symptoms of Knee sprain: The symptom information on this page attempts to provide a list of some possible signs and symptoms of Knee sprain. This signs and symptoms information for Knee sprain has been gathered from various sources, may not be fully accurate, and may not be the full list of Knee sprain signs or Knee sprain symptoms. Furthermore, signs and symptoms of Knee sprain may vary on an individual basis for each patient.