What should I do if my arm hurts after receiving the third dose of the vaccine?
Dec 03, 2025
Source: Cainiu Health
Dr. Li Feng
Introduction
Pain in the arm after receiving the third vaccine dose can be relieved through local cold compresses, avoiding strenuous activity, keeping the injection site clean, gentle massage, and adequate rest. This is a common local reaction following vaccination and usually resolves on its own. If the pain persists for more than 3 days, worsens, or is accompanied by redness, swelling, pus, or systemic fever, prompt medical attention is recommended.
After receiving the third dose of the vaccine, arm pain is a common local reaction that usually resolves on its own. You can relieve discomfort through methods such as applying a cold compress to the area, avoiding strenuous activity, keeping the injection site clean, gently massaging the area, and getting adequate rest. If pain persists beyond three days or worsens, accompanied by redness, swelling, pus, or fever, seek medical attention promptly.
1. Local Cold Compress: Within 48 hours after vaccination, apply an ice pack wrapped in a clean towel to the injection site for 15–20 minutes, 2–3 times daily, to reduce inflammation and pain. Avoid direct contact between the ice pack and skin.
2. Avoid Strenuous Activity: Avoid heavy lifting, running, or other intense physical activities within 24 hours after vaccination to minimize muscle strain at the injection site, prevent increased pain, and allow the muscles to remain relaxed.
3. Keep Injection Site Clean: Do not bathe or get the injection site wet within 24 hours after vaccination. Avoid scratching or pressing the area with your hands to prevent bacterial infection and worsening redness or pain.
4. Gentle Massage: If soreness persists after 48 hours, gently massage in circular motions around the injection site to improve local blood circulation, ease muscle tension, and reduce pain. Use only light, comfortable pressure.
5. Adequate Rest: Ensure sufficient sleep and avoid overexertion so your body can focus energy on the immune response. This also helps reduce heightened sensitivity to pain caused by general discomfort.
Wear loose, breathable cotton clothing after vaccination to minimize friction at the injection site. Maintain a light diet and avoid spicy or irritating foods. Drink plenty of water to support metabolism. Do not apply topical ointments or take pain relievers without medical advice, allowing the local reaction to resolve naturally.
