While not a primary symptom, the flu can sometimes cause back pain.
Although lower back pain isn't typically listed as a specific, common symptom of the flu, the flu can trigger muscle aches throughout the body, and these aches can certainly extend to the lower back.
Here's a breakdown:
- Muscle Aches: The flu often causes generalized muscle aches and pains due to the body's inflammatory response to the viral infection.
- Location of Pain: These muscle aches aren't limited to specific areas. The muscles in your back, including your lower back, can be affected.
- Severity: The intensity of back pain related to the flu varies from person to person.
- Other Contributing Factors: Fatigue from fighting off the flu can also lead to poor posture, which can, in turn, contribute to back pain.
Therefore, while the flu isn't directly causing damage to the spine or related structures, the associated muscle inflammation and fatigue can lead to noticeable back pain.