1. The Role of the Immune Response

When the flu virus enters the body, the immune system releases chemicals called cytokines to fight the infection. While these chemicals protect us, they also trigger inflammation, which can cause muscle and joint soreness.

2. Inflammation and Pain

Inflammation around muscles and joints increases sensitivity, making even small movements uncomfortable. This process is a natural part of the body’s defense but often leads to aches during illness.

3. Dehydration and Fatigue

Fever, sweating, and reduced fluid intake can cause dehydration. Dehydration affects muscle function, leading to cramps, weakness, and added discomfort in the joints.

4. Rest and Limited Activity

During illness, people often rest more and move less. Reduced activity can make joints feel stiff and muscles weaker, adding to the overall achy sensation.

5. Relief Strategies

• Stay hydrated to support muscle function.
• Use warm compresses to ease stiffness and discomfort.
• Get plenty of rest to help the body heal faster.
• Light stretching or gentle movement can improve circulation.
• Over-the-counter pain relievers may provide temporary relief (consult a doctor if needed).

Conclusion

Muscle and joint aches during the flu are mainly caused by the body’s immune response, inflammation, and reduced activity. These aches are temporary and usually improve as the infection clears, but supportive care can ease discomfort along the way.