It's free, and you don't even need an e-mail address! Editing and starting new articles is strongly encouraged; and don't worry about messing up, someone else can come along and correct any mistakes you make! To start contributing, please see the Help, Manual of Style, and Community Central pages.
1 When blood clots occur in a vein, symptoms may include. 2  pain, 3  swelling, 4  warmth, and. 5  redness. 6  If a forms in a vein in a leg or arm breaks; breaks off and travels to the lung a pulmonary embolus can occur. 7  Symptoms of pulmonary embolism are chest pain and shortness of breath.
Symptoms of a blood clot in the calf, also known as deep vein thrombosis, include swelling, pain and tenderness, especially with standing or movement, and warmth or redness in the affected leg, according to WebMD. The leg may also be discolored, have visible surface veins and fatigue easily. Continue Reading.