Branislav Kollár, Katarína Klobučníková
Headache is one of the most common, discomfort causing, clinical symptom. It is a same kind of symptom as any other pain. It may be a manifestation of an isolated disease or clinical unit (primary headache) or a symptom of disorders with various etiologies (secondary headache). Establishing the accurate and correct diagnosis is essential for the patient’s future. In this article the authors present the classification of headaches, differences between the primary and secondary headaches; they call attention to warning signs (red flags) of the secondary headaches and propose a guideline for establishment of the correct diagnosis.