The booklet discusses the head­ ache which is among the most prevalent symptoms marking dif­ ferent pathological conditions of the body. It shows how headaches may develop in healthy subjects and in those afflicted with different diseases.The causes for headaches, the mechanisms by which they de­ velop, the features of the var­ ious types of headaches, and the basic principles of headache prophylaxis and elimination are reviewed. Medical recommen­ dations for patients suffering from headache are given.The booklet is intended for a wide spectrum of general read­ ers.credits to gnv64