Edema

A swollen ankle is a finding, not a diagnosis. The useful assessment question is why fluid has accumulated there and whether the pattern signals a local problem, systemic congestion, or an immediate threat such as deep vein thrombosis or pulmonary embolism. Start with distribution and symmetry, then inspect the skin and test for pitting. Compare the two limbs using the same landmarks, consider the patient’s position, and look beyond the obvious area: a bedbound patient may have little ankle swelling but significant sacral or posterior edema. The grade matters, but so do the associated findings—dyspnea, jugular venous distension, calf warmth, tenderness, erythema, reduced urine output, and rapid weight gain can change the priority from routine measurement to urgent escalation.