The short answer
A cast protects an injury while it heals. Keep it dry unless your team specifically confirms it is waterproof, and seek urgent assessment for increasing tightness, numbness, burning or difficulty moving the fingers or toes.
Understanding the problem
Swelling can change how a cast fits, particularly early after injury. A cast that becomes loose, cracks or rubs the skin also needs checking. Pain settling does not prove that the bone is ready for unsupported activity.
Care and next steps
Follow the elevation and movement instructions given by your treating team. Do not insert objects to scratch underneath, cut the cast or remove its padding. Only put weight through the limb when you have permission to do so.
Prepare for your consultation
Before leaving the clinic, ask for a written contact number for cast problems and confirm the next check. Explain how you will bathe, use the toilet and travel with the cast. If your child is wearing it, ask how school staff should help. Keep the discharge instructions available so a family member can find them if you need assistance at night.
Common questions
Can I remove my own cast when the pain stops?
No. The treating team needs to confirm healing and arrange appropriate removal.
Medical sources & further reading
This patient education guide was approved for publication by Dr Shahrukh Khan on 11 September 2026. It cannot diagnose your symptoms or replace a personalised clinical assessment. Editorial policy · About the doctor.