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1. Unilateral Calf Swelling: The Hallmark of DVT
Deep Vein Thrombosis (DVT) is the most common precursor to life-threatening complications. Because gravity causes blood to pool in the lower extremities, the legs are prime real estate for clot formation. If you notice that one calf is significantly larger than the other, take it seriously. This swelling is rarely subtle; the skin may feel tight, appear reddish or bluish, and feel abnormally warm to the touch. Crucially, DVT typically affects only one limb. If both legs are swelling, it may point toward heart or kidney issues, but a single swollen calf is a classic red flag for a localized blockage.
