Swelling in the upper leg or thigh is not water retention / edema instead it can occur for a number of reasons. Let's see some possible causes of thigh swelling.

Swelling in the upper leg or thigh is not water retention / edema instead it can occur for a number of reasons. Let's see some possible causes of thigh swelling.
This is the third part of Peripheral Edema article, you can find a list of drugs which can affect certain functions of the body and cause lower leg edema includes the legs, feet and ankles. For causes of swelling in the upper leg, you can visit Thigh Swelling – Upper Leg Swelling.
We already known that medical reason is not the only cause of swelling feet and legs but some hormonal factors and certain bad condition can also trigger it. This is the second part of Peripheral Edema article and we'll look at some hormonal and condition causes of ankle and leg edema below. For information about the causes of thigh swelling, visit Thigh Swelling – Upper Leg Swelling.
Peripheral edema is an abnormal fluid retention in the lower legs that cause swelling of tissues in the calves, ankles, legs and feet. Read Thigh Swelling – Upper Leg Swelling to learn about swelling in the upper legs.
Ascites is an excess fluid retention or edema within the abdominal or peritoneal cavity, the membrane lining the abdominal organs and the abdomen itself.