What should I do if my lower back hurts after getting vaccinated?

Dec 02, 2025 Source: Cainiu Health

Dr. Li Feng

Introduction

Lower back pain after vaccination can be managed by observing the characteristics of symptoms, getting appropriate rest and immobilization, applying local heat therapy, adjusting posture habits, and maintaining hydration and nutrition. In most cases, it is a mild adverse reaction to vaccination and will usually resolve on its own. However, if the back pain is severe, lasts longer than 3 days, or is accompanied by fever or limb numbness, prompt medical attention is recommended.

Lower back pain after vaccination can be managed by observing the characteristics of symptoms, getting appropriate rest and immobilization, applying local heat therapy, adjusting posture habits, and maintaining hydration and nutrition. In most cases, it is a mild adverse reaction following vaccination and will usually resolve on its own. However, if the back pain is severe, lasts longer than three days, or is accompanied by fever or limb numbness, prompt medical attention is recommended.

1. Observe symptom characteristics: Pay attention to whether the lower back pain appeared within hours after vaccination and whether it is associated with local redness, swelling, or limited movement. Differentiate between vaccine-related reactions and coincidental back conditions to avoid inappropriate management.

2. Get appropriate rest and avoid strain: Minimize activities that strain the lower back, such as bending over or lifting heavy objects. Ensure sufficient rest to allow the back muscles and spine to relax, preventing worsening pain due to excessive activity.

3. Apply local heat therapy: Use a hot water bag or warm towel at around 40°C on the painful area for 15–20 minutes, 2–3 times daily. This helps improve local blood circulation and relieve muscle tension and pain.

4. Adjust posture habits: Maintain an upright sitting posture with lumbar support using a cushion; stand straight without leaning; choose a mattress of medium firmness for sleep and adopt supine or side-lying positions to reduce pressure on the lower back.

5. Stay hydrated and nourished: Drink adequate water to support metabolism and consume foods rich in vitamins and protein to aid recovery, strengthen musculoskeletal nutrition, and help alleviate discomfort.

In daily life, avoid intense physical activity immediately after vaccination. Keep the lower back warm to prevent cold exposure, maintain regular sleep patterns, and avoid staying up late. If the pain is mild, light walking is acceptable, but avoid remaining in the same position for prolonged periods to promote faster recovery.

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