Editing Headache (section)

=== New headaches ===
New headaches are more likely to be dangerous [[#Secondary headaches|secondary headaches]]. They can, however, simply be the first presentation of a chronic headache syndrome, like [[migraine]] or a [[tension headache]].

One recommended diagnostic approach is as follows.<ref>{{cite book | chapter-url = http://accessmedicine.mhmedical.com/content.aspx?bookid=383&sectionid=41676347 | chapter = Chapter 18: I Have a Patient with Headache. How Do I Determine the Cause? | veditors = Stern SC, Cifu AS, Altkorn D | title = Symptom to Diagnosis: An Evidence-Based Guide | edition = 2nd | location = New York, NY | publisher = McGraw-Hill | date = 2010 | archive-url = https://web.archive.org/web/20150531030350/http://accessmedicine.mhmedical.com/content.aspx?bookid=383&sectionid=41676347 | archive-date=31 May 2015 }}</ref> If any urgent [[#Red flags|red flags]] are present such as [[visual impairment]], new [[Seizure|seizures]], new [[weakness]], or new [[confusion]], further workup with imaging and possibly a [[lumbar puncture]] should be done (see red flags section for more details). If the headache is sudden onset (thunderclap headache), a [[CT scan|computed tomography scan]] (CT scan) to look for a brain bleed ([[subarachnoid hemorrhage]]) should be done. If the CT scan does not show a bleed, a lumbar puncture should be done to look for blood in the [[cerebrospinal fluid]] (CSF), as the CT scan can be [[False positives and false negatives|falsely negative]] and [[Subarachnoid hemorrhage|subarachnoid hemorrhages]] can be fatal. If there are signs of infection such as [[fever]], [[rash]], or [[Neck stiffness|stiff neck]], a lumbar puncture to look for [[meningitis]] should be considered. In an older person, if there is [[jaw claudication]] and scalp [[Tenderness (medicine)|tenderness]], a temporal artery biopsy should be preformed to look for temporal [[arteritis]], immediate treatment should be started, if results of the biopsy are positive.{{citation needed|date=June 2021}}