abnormal fluid regulation AE fluid retention AE 10016807 JX, YH WEB: http://www.healthgrades.com/symptoms/fluid-retention Fluid retention AE is an abnormal fluid regulation AE that is excess fluid that collects in the tissues in your body. Most commonly, fluid retention is marked by swelling of your feet and lower legs, but swelling could also occur in your arms, hands, face, or other areas of the body.