What should I do if my lower leg swells after running?

Generally, the main approaches to managing swollen calves after running include stopping exercise and resting, elevating the affected limb to reduce swelling, alternating cold and heat compresses, gentle massage for relaxation, and appropriate medication for symptom relief. Specific details are as follows:

1. Stop exercising and rest

Swelling in the lower leg after running is often caused by muscle overuse and poor blood circulation. Immediately stop running and any other strenuous activities to allow the calf muscles to relax. This prevents further stress that could worsen fluid leakage into tissues, creating the necessary conditions for reducing swelling and preventing it from getting worse.

2. Elevate the affected limb to reduce swelling

When sitting or lying down, use pillows or cushions to elevate the swollen calf above heart level. This uses gravity to promote venous blood and tissue fluid return from the lower limbs, reducing fluid accumulation in the calf, quickly alleviating swelling, and simultaneously relieving muscle soreness.

3. Alternate cold and heat compresses

Within the first 48 hours of swelling, apply a cold pack wrapped in a towel for 15–20 minutes at a time. The low temperature helps constrict blood vessels and reduce fluid exudation. After 48 hours, switch to warm compresses using a heated towel to improve local blood circulation, accelerate the removal of metabolic waste, and aid in reducing swelling and promoting muscle recovery.

4. Gentle massage for relaxation

Use your palms to gently rub from the ankle upward toward the calf, applying pressure that feels comfortable without causing pain. Massage helps relax tight calf muscles, unblock meridians, improve local circulation, relieve muscle spasms, further promote the resolution of swelling, and restore muscle elasticity.

5. Use medication appropriately for relief

If swelling is accompanied by significant pain, topical application of diethylamine salicylate emulgel may be used under medical guidance to reduce inflammation. If swelling results from an allergic reaction post-exercise, oral cetirizine hydrochloride tablets can be taken. In cases of severe muscle strain, Yunnan Baiyao aerosol may also be used under a doctor’s supervision.

Before regular running, ensure adequate warm-up exercises, wear suitable running shoes, and avoid sudden increases in exercise intensity. During recovery, maintain a light diet, reduce intake of high-sodium foods, and consume more protein-rich foods. If swelling persists for over a week without improvement, or if symptoms such as skin discoloration (purple hue) or worsening pain occur, seek medical attention promptly.