- your knee is very painful
- you cannot move your knee or put any weight on it
- your knee is badly swollen or has changed shape
- your knee locks, gives way or painfully clicks - painless clicking is normal
- you have a very high temperature, feel hot and shivery, and have redness or heat around your knee - this can be a sign of infection
111 will tell you what to do. They can tell you the right place to get help if you need to see someone.
Get help from NHS 111 online or call 111.
A doctor can suggest treatment based on what's causing your knee pain.
If you have knee pain, you might be able to refer yourself directly to services for help with your condition without seeing a GP.
Knee pain can be a symptom of many different conditions.
This information might give you an idea of what the cause might be. But do not self-diagnose - see a GP if you're worried.