Headache is one of the most common non-specific symptoms of various diseases and pathological conditions, which is pain in the head. Headache is a much less uniform concept than it seems at first glance. Periodically, it occurs in almost everyone, but persistent headaches can be a symptom of some diseases. Classification of types of headache and distinctive symptoms of each type. It will be difficult for someone who rarely has discomfort in the head to imagine that there are different types of headaches.