1. Lower Backache as a Side Effect:

   • Lower backache can occur with isotretinoin, though it's uncommon. It may relate to musculoskeletal symptoms like joint or muscle pain.

2. Monitoring Symptoms:

   • If the backache is mild, monitor it. Seek medical advice if it becomes severe, persistent, or is accompanied by swelling or weakness.

3. Activity Considerations:

   • Continue daily activities if pain is manageable. Rest and avoid strenuous activities if discomfort increases until consulting your doctor.

4. Communication with Healthcare Provider:

   • Inform your doctor about any new or worsening symptoms. They may adjust your treatment or suggest supportive measures.

In summary, mild lower backache can be a side effect but should be monitored. Consult your doctor if symptoms worsen.