A headache is one of the most common human ailments. Nowadays, it is known that it can be caused by very different reasons, so it should never be underestimated. We distinguish between a secondary headache, which in many cases is indicative of a specific disease in the human body, or a primary (intrinsic) headache, which is a separate disease. Symptomatic headaches are relatively less frequent than spontaneous headaches and usually indicate one of the symptoms of a specific disease, e.g. a head injury or an inflammatory or vascular disease.