Temporal patterns of headache Temporal patterns of headache. Migraine headache is episodic and may occur at varying intervals. Tension-type headache may be present every day. Cluster headache occurs in bouts separated by symptom-free periods. Headache caused by brain tumor often increases in severity with time. Source: Headache & Facial Pain, Clinical Neurology, 9e Citation: Aminoff MJ, Greenberg DA, Simon RP. Clinical Neurology, 9e; 2015 Available at: https://accessmedicine.mhmedical.com/DownloadImage.aspx?image=/data/Books/1194/ami_ch6_f002.png&sec=99975967&BookID=1194&ChapterSecID=78427211&imagename= Accessed: November 12, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved