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.
Leg Pain or Tenderness. People with a blood clot in the thigh can experience sensations of mild to severe leg pain as a symptom of deep vein thrombosis. Sensations of pain may be worse when a person places weight on the affected leg, MedlinePlus notes.