Isabel: the one the doctors use

The Isabel Symptom Checker is adapted from the Isabel Differential Diagnosis Generator, which has been used by healthcare professionals around the world for the past two decades. We want you to be able to make sense of the vast amounts of medical knowledge out there, become better informed about your symptoms and know where to see care.

How can Isabel help you?...

What kind of help do you need? If you want to understand what’s wrong with you, go to ‘Understand my Symptoms’. If you have already decided to seek care and need help choosing where to go, use ‘Where to get care’.

Enter your symptoms…

Isabel covers 6,000 diseases and, unlike other symptom checkers, allows you to enter as many symptoms as you like. You can even include test results and any other chronic conditions you may have such as diabetes or high blood pressure.

I didn't know this tool existed. Thank you for the comfort and sense of direction instead of just leaving someone in the dark to ponder the worst.

- United Kingdom, 2019 everyday language without endless questions

The Isabel Symptom Checker is built using the latest Artificial Intelligence searching technology, allowing you to enter all your symptoms in everyday language in one go, without going through endless questions.

Natural Language

Research your symptoms or seek care...

Isabel will help you understand more about possible conditions that could be causing your symptoms or assist with where to seek care for your symptoms.


...then discuss with your Doctor

Now you have become more informed about your symptoms, you are able to have a more productive discussion with your doctor or healthcare provider about your condition.

Try it out

Enter your symptoms into the Isabel Symptom Checker and research your symptoms. Our Symptom Checker is and always will be free to use.