Editing Brain tumor (section)

===Headaches {{anchor|Headache}}===
Headaches as a result of raised [[intracranial pressure]] can be an early symptom of brain cancer.<ref name=":0">{{cite journal | vauthors = Kahn K, Finkel A | title = It IS a tumor -- current review of headache and brain tumor | journal = Current Pain and Headache Reports | volume = 18 | issue = 6 | pages = 421 | date = June 2014 | pmid = 24760490 | doi = 10.1007/s11916-014-0421-8 | s2cid = 5820118 }}</ref> However, isolated headache without other symptoms is rare, and other symptoms including visual abnormalities may occur before headaches become common.<ref name=":0" /> Certain warning signs for headache exist which make the headache more likely to be associated with brain cancer.<ref name=":0" /> These are defined as "abnormal neurological examination, headache worsened by [[Valsalva maneuver]], headache causing awakening from sleep, new headache in the older population, progressively worsening headache, atypical headache features, or patients who do not fulfill the strict definition of migraine".<ref name=":0" /> Other associated signs are headaches that are worse in the morning or that subside after vomiting.<ref>{{Cite web|date=2020-11-19|title=Nosebleeds & Headaches: Do You Have Brain Cancer?|url=https://ana-neurosurgery.com/symptoms-brain-tumor/|access-date=2020-11-26|website=Advanced Neurosurgery Associates|language=en-US}}</ref>