a deep leg vein is called deep vein thrombosis, or DVT. This can be dangerous because part of the clot may travel to the lungs.
Warning signs may include sudden swelling in one leg, pain or tenderness, warmth, redness or tightness. Sometimes symptoms are mild, but a one-sided swollen painful leg should never be ignored.
Seek urgent medical care if leg swelling appears suddenly, especially if it is one-sided. Call emergency services immediately if leg symptoms come with chest pain, shortness of breath, coughing blood, dizziness or fainting.
4. Diabetes
