Introduction. Introduction. Secondary headaches can result from many dangerous and life-threatening diseases. It may occur in the course of, among others, brain tumour, intracranial haematoma, meningitis, neuroborreliosis, systemic vasculitis, an aneurysm of the dissecting carotid artery, etc. The basis for the differentiation of these ailments are prerequisites for appropriate rescue measures at the site of the incident as well as for appropri-ate specialist treatment.
The aim of the study. The aim of the study was to present charac-teristics of secondary headaches.
Selection of material. The search was conducted in the Scopus database using the terms secondary headache, diagnostics 2004-2018. The literature found in the Google Scholar database was analysed for the highest number of citations. The literature se-lected in this way was used as the material for this study.
Conclusions. The most dangerous factors associated with second-ary headaches include head or neck vascular diseases, which include atherosclerosis of the neck arteries, hypertension and strokes. Proper initial diagnosis determines the therapeutic suc-cess, e.g. in ischemic strokes, it is important to use the so-called therapeutic window (for the used rt-PA - time up to 4 and a half hours from the first symptoms or mechanical thrombectomy - time up to 6 hours).