8 Signs of a Blood Clot You Should Never Ignore, According to Doctors

Leg or arm pain

Usually, DVT pain comes as a combo with other symptoms like swelling or redness, but sometimes it can stand alone.

“Unfortunately, pain from a blood clot can easily be mistaken for a muscle cramp or strain, which is why the issue often goes undiagnosed and is specifically dangerous,” says Dr. Navarro.

DVT pain tends to strike when you’re walking or when you flex your foot upward. If you have a charley horse you can’t seem to shake—especially if the skin near it is warm or discolored—have your doctor take a look.