Inflammation can also make your legs swell. This can be the human body’s natural reaction to injury and ailment. Leg swelling can occur immediately after an injury on the leg, ankle, or foot. It could also occur resulting from inflammatory conditions, such as rheumatoid arthritis. DVT isn’t life-threatening by itself. https://www.sgvascularctr.com/swollen-leg-why-do-i-have-it-and-what-can-i-do/