When you have symptoms such as sharp, relentless pain on just one side of your face, especially inside your teeth or jaw, that comes and goes, you can suspect a diagnosis of TN.
The pain is often triggered by chewing, cold wind, brushing your teeth or even sitting in a moving car and is usually short and fleeting, but it can also be a more constant dull type of pain.
When you have pain on both sides of your face, it is usually not TN but something else, such as sinusitis for example.
However, you need to realise that there are a lot of different types of facial pain, which are extremely difficult to diagnose.
Therefore, you should consult your GP as soon as possible and ask for a referral to a neurologist who can provide you with an accurate diagnosis.