What Causes Hand Swelling?
What Causes Hand Swelling?
Swelling of the fingers—from a surgical perspective—first warrants consideration of trauma. Aside from traumatic causes, repetitive strain injuries may also occur; performing the same motion repeatedly can damage joints over time, leading to joint enlargement and hand swelling.

Beyond surgical causes, internal medical conditions must also be considered—for example, renal insufficiency, which impairs glomerular filtration and compromises venous return, potentially resulting in hand swelling. Similarly, cardiac insufficiency—impaired heart function—can cause swelling in the extremities.

Additionally, physiological swelling may occur—for instance, drinking excessive fluids the previous evening, coupled with relatively slow metabolic clearance, can impair venous return, causing noticeable hand swelling upon waking the next morning. This type of swelling typically resolves spontaneously and does not require specific intervention.