Trigeminal neuralgia does not have very obvious precursors. This is because trigeminal neuralgia often occurs suddenly, especially with the concept of trigger points. That is to say, once the trigger point is activated, it immediately induces pain without any warning signs. Trigger points vary from person to person, usually located primarily on the cheek. Patients who frequently suffer from trigeminal neuralgia often know these areas. Typically, the pain occurs during activities like brushing teeth with cold water or chewing hard foods such as peanuts or walnuts, triggering severe pain instantly. Thus, in the case of trigeminal neuralgia, there are no precursors, only immediate triggers and immediate pain.