Prevention & care
Headaches: patterns, causes, diaries and assessment
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Headache is pain in the head or nearby face and neck. A primary headache is itself a headache disorder; a secondary headache arises from another condition. The distinction describes the cause, not how real or disruptive the pain is.[1]
Start with the pattern and the clinical context
Tension-type headache, migraine and cluster headache are different primary disorders. Secondary causes range from illness to medication overuse. Headache can disrupt work, learning and relationships even when no dangerous structural problem is found. A label should explain the pattern and support a care plan.[2]
Tension-type describes pressure rather than a personality trait
A typical tension-type headache feels like pressure or tightness on both sides of the head, face or neck. Ordinary activity usually does not make it worse. Stress, sleep problems and caffeine can contribute, but the word tension does not prove a psychological cause. Repeated or severe episodes deserve assessment.[3]
Cluster attacks have a different pattern
Cluster headache can produce extremely severe one-sided pain around an eye, with restlessness and same-sided tearing, redness or nasal symptoms. Attacks may recur in bouts and usually last 15 minutes to three hours. A newly drooping eyelid or unequal pupil is not something to label as an established cluster pattern at home: NHS advises emergency assessment when it first appears.[4]
A useful diary records more than pain intensity
NICE suggests recording frequency, duration, severity, associated symptoms, all headache medicines, possible precipitants and relation to menstruation. For diagnosis, its over-12s guideline suggests at least eight weeks. A diary organizes a consultation; do not wait to complete it when urgent symptoms occur.[5]
Sudden changes can override a familiar diagnosis
Seek immediate local emergency help for a sudden extremely painful headache, or headache with a seizure, new weakness, speech or walking difficulty, loss of vision, confusion, marked drowsiness, or high fever, stiff neck or marked light sensitivity. Headache after a recent head injury also needs urgent emergency assessment under NHS advice. A headache triggered by coughing or exercise, worsening symptoms, vomiting, or jaw pain when eating or a tender scalp needs prompt medical assessment. These examples are not a complete triage rule.[6]
Children need an age-specific assessment
The Royal Children’s Hospital guideline highlights early-morning or sleep-waking headache, unexplained vomiting, progressive change, neurological symptoms and developmental regression as pediatric warning features. A young child may describe symptoms poorly. Most children do not need investigations, but that conclusion follows assessment for warning features rather than a parent applying an adult checklist.[1]
Pregnancy changes the question
A severe headache during pregnancy, especially with visual changes, pain below the ribs, vomiting or sudden swelling, needs immediate maternity or medical assessment. NHS guidance identifies these as possible preeclampsia features. They do not diagnose it from symptoms alone. Check medicine suitability with the maternity team or pharmacist rather than copying a usual headache regimen.[7]
More days of acute medicine can create another problem
Medication-overuse headache can develop or worsen with frequent use of acute headache medicines over months. NICE distinguishes medicine categories and patterns rather than one universal tablet limit. Bring prescription, combination and nonprescription products to the review. A withdrawal or preventive plan needs appropriate supervision, particularly with opioids or other dependence-related medicines.[5]
Evidence & uncertainty
A familiar pattern and a normal neurological examination can make routine scanning inappropriate. New warning features change that assessment; an online description cannot establish the relevant category.[8]
Selected-source overview · Independent review pendingPublished questions
Does primary mean mild and secondary mean severe?
Selected-source overview · Independent review pending. Read the evidence context.
No. Primary and secondary describe whether headache is a disorder itself or arises from another cause. Severity alone does not make that distinction. A severe primary attack and a secondary emergency can both be disabling.[1]
Evidence behind this answer
- Clinical Practice Guidelines: Headache
hospital pediatric clinical guideline · 2022
Relevant original-source text inspected; no independent full evidence appraisal · Background, assessment red flags, investigation and follow-up
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Does having a headache mean I am just stressed?
Selected-source overview · Independent review pending. Read the evidence context.
No. Headache disorders have different causes and patterns. Stress can matter, but it does not establish the diagnosis or make pain unimportant. Discuss the pattern, associated symptoms and effect on daily life.[2]
Evidence behind this answer
- Migraine and other headache disorders
agency explanation · 2025
Relevant original-source text inspected; no independent full evidence appraisal · Overview, types, disability and barriers to care
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Is a pressure-like headache automatically migraine?
Selected-source overview · Independent review pending. Read the evidence context.
No. Bilateral pressure without worsening during ordinary activity is a typical tension-type pattern. Throbbing pain, nausea or sensitivity to light and sound may point to another pattern, but assessment is needed when the cause is unclear.[3]
Evidence behind this answer
- Tension headaches
official patient guidance · 2025
Relevant original-source text inspected; no independent full evidence appraisal · Symptoms, causes, pharmacist advice and review
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Does a watery eye or blocked nose prove sinusitis?
Selected-source overview · Independent review pending. Read the evidence context.
No. Cluster headache can include same-sided eye and nasal symptoms with severe short attacks and restlessness. Other conditions can resemble it. A first drooping eyelid or newly unequal pupils needs emergency assessment rather than self-labeling.[4]
Evidence behind this answer
- Cluster headaches
official patient guidance · 2023
Relevant original-source text inspected; no independent full evidence appraisal · Attack pattern, assessment and first pupil/eyelid changes
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
What should I bring to a headache appointment?
Selected-source overview · Independent review pending. Read the evidence context.
A record of headache days, duration, severity, associated symptoms, possible triggers and every medicine used is useful. NICE also includes relation to menstruation. Record missed activities as context; urgent changes should not wait for a finished diary.[5]
Evidence behind this answer
- Headaches in over 12s: diagnosis and management, CG150
original professional guideline · 2025-06-03
Original recommendations retrieved with Firecrawl after native direct 403; selected assessment, diary and medication-overuse passages inspected · 1.1.3–1.1.4, 1.2.7, 1.3.42–1.3.48
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Should every recurring headache have a brain scan?
Selected-source overview · Independent review pending. Read the evidence context.
No. ACR rates routine initial imaging as usually inappropriate in defined uncomplicated patterns with normal examination or no listed red flags. The history and examination determine whether a different imaging question exists.[8]
Evidence behind this answer
- ACR Appropriateness Criteria: Headache, revised 2022
original imaging appropriateness guideline · 2022
Original ACR scenario tables retrieved with Firecrawl after native 403; selected tables inspected · Variant 2 and Variant 8 appropriateness tables; contrasting red-flag scenarios
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Will an MRI necessarily stop my worry or my headaches?
Selected-source overview · Independent review pending. Read the evidence context.
No. In the cited chronic-headache trial, reduced worry at three months was not maintained at one year. The study tested an offer of imaging, not a cure for headache.[9]
Evidence behind this answer
- Are investigations anxiolytic or anxiogenic? A randomised controlled trial of neuroimaging to provide reassurance in chronic daily headache
original randomized trial · 2005
Original indexed PubMed abstract read in full using Firecrawl; full study appraisal not completed · Original abstract: methods, follow-up, anxiety and resource results
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Can frequent pain medicine worsen headache?
Selected-source overview · Independent review pending. Read the evidence context.
Yes. Medication overuse is a recognized clinical problem, with different patterns for different products. Review how many days each product is used with a clinician; do not improvise a withdrawal plan for dependence-related medicines.[5]
Evidence behind this answer
- Headaches in over 12s: diagnosis and management, CG150
original professional guideline · 2025-06-03
Original recommendations retrieved with Firecrawl after native direct 403; selected assessment, diary and medication-overuse passages inspected · 1.1.3–1.1.4, 1.2.7, 1.3.42–1.3.48
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Is drinking extra water proven to reduce headache days?
Selected-source overview · Independent review pending. Read the evidence context.
Not by the cited small trial. Some subjective outcomes improved, but days with at least moderate headache did not meaningfully change. Hydration needs and clinical fluid restrictions differ between people.[10]
Evidence behind this answer
- A randomized trial on the effects of regular water intake in patients with recurrent headaches
original randomized trial · 2012
Original PubMed abstract read in full using Firecrawl; full study appraisal not completed · Original abstract: eligibility, 102 randomized, quality-of-life and headache-day outcomes
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Does the acupuncture review show the same benefit against every comparison?
Selected-source overview · Independent review pending. Read the evidence context.
No. Effects were larger against usual care than against sham acupuncture. The review concerned frequent tension-type headache and older trials, not all headache causes.[11]
Evidence behind this answer
- Acupuncture for the prevention of tension-type headache
systematic review · 2016
Original Cochrane summary and full abstract inspected; individual trial appraisal not repeated · Review summary and original abstract: search date, participants, usual-care and sham comparisons
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Can an adult headache checklist rule out a problem in a child?
Selected-source overview · Independent review pending. Read the evidence context.
No. Age, development and pediatric warning features matter. Headache waking a child, progressive change, unexplained vomiting or neurological changes need assessment; not every child needs a scan.[1]
Evidence behind this answer
- Clinical Practice Guidelines: Headache
hospital pediatric clinical guideline · 2022
Relevant original-source text inspected; no independent full evidence appraisal · Background, assessment red flags, investigation and follow-up
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Should a severe pregnancy headache wait for the next routine appointment?
Selected-source overview · Independent review pending. Read the evidence context.
No. NHS advises immediate contact with maternity or medical services, particularly with visual changes, rib-area pain, vomiting or sudden swelling. Symptoms require assessment rather than proving preeclampsia.[7]
Evidence behind this answer
- Headaches in pregnancy
official pregnancy guidance · 2024
Relevant original-source text inspected; no independent full evidence appraisal · Urgent symptoms and medicine advice
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Does a previous migraine diagnosis make a sudden new headache safe?
Selected-source overview · Independent review pending. Read the evidence context.
No. Sudden extreme pain, new neurological symptoms, confusion, seizure or concerning fever features need emergency help. An established diagnosis does not explain every later episode.[6]
Evidence behind this answer
- Headaches
official patient guidance · 2024
Relevant original-source text inspected; no independent full evidence appraisal · When and where to get medical help
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
A scan answers a particular question
ACR’s 2022 criteria rate initial imaging as usually inappropriate for primary migraine or tension-type headache with a normal neurological examination, and for headache without specified red flags. Other scenarios, including sudden severe onset, neurological change or a new pregnancy-related pattern, have different imaging pathways. This is professional decision guidance, not a promise that a scan can never be needed.[8]
Reassurance from imaging can be temporary
In an older trial, 150 people with chronic daily headache were offered MRI or usual care. Worry about a serious cause was lower at three months among those offered scanning, but that difference was not maintained at one year. Follow-up questionnaires were incomplete. This selected clinic study did not test whether everyone with headache should be scanned, nor whether a scan treats the headache itself.[9]
Everyday measures and research claims need different tests
For an assessed tension-type pattern, NHS suggests addressing sleep and relaxation and asking a pharmacist which pain relief is suitable. Frequent medicine use should be discussed. A change that seems to precede an attack is worth recording; it does not by itself establish one avoidable cause.[3]
A 102-person primary-care trial added advice to drink more water to stress and sleep advice. After three months, quality-of-life scores and perceived improvement favored extra water, but days with at least moderate headache did not meaningfully change. The unblinded advice and selected baseline intake limit interpretation. This is not evidence for forcing extra water or overriding a prescribed fluid restriction.[10]
Preventive evidence depends on the comparator
A 2016 Cochrane review of 12 trials in 2,349 adults examined acupuncture for frequent tension-type headache. Compared with usual care, more participants halved headache frequency; the difference was smaller against sham acupuncture. The review rated evidence moderate overall and searched through early 2016. This concerns prevention in a defined disorder, not treating any new headache or proving every technique works.[11]
References
- Clinical Practice Guidelines: Headache
Hospital pediatric clinical guideline
Royal Children’s Hospital Melbourne · Content/publication date: 2022
Accessed: 2026-10-20 UTC · Relevant original-source text inspected; no independent full evidence appraisal
Cited sections: Background, assessment red flags, investigation and follow-upPediatric assessment scope.
- Migraine and other headache disorders
Agency explanation
World Health Organization · Content/publication date: 2025
Accessed: 2026-10-20 UTC · Relevant original-source text inspected; no independent full evidence appraisal
Cited sections: Overview, types, disability and barriers to careNo prevalence estimate imported.
- Tension headaches
Official patient guidance
NHS · Content/publication date: 2025
Accessed: 2026-10-20 UTC · Relevant original-source text inspected; no independent full evidence appraisal
Cited sections: Symptoms, causes, pharmacist advice and review - Cluster headaches
Official patient guidance
NHS · Content/publication date: 2023
Accessed: 2026-10-20 UTC · Relevant original-source text inspected; no independent full evidence appraisal
Cited sections: Attack pattern, assessment and first pupil/eyelid changesDisplayed review due date has passed.
- Headaches in over 12s: diagnosis and management, CG150
Original professional guideline
NICE · Content/publication date: 2025-06-03
Accessed: 2026-10-20 UTC · Original recommendations retrieved with Firecrawl after native direct 403; selected assessment, diary and medication-overuse passages inspected
Cited sections: 1.1.3–1.1.4, 1.2.7, 1.3.42–1.3.48Whole guideline treated as one work.
- Headaches
Official patient guidance
NHS · Content/publication date: 2024
Accessed: 2026-10-20 UTC · Relevant original-source text inspected; no independent full evidence appraisal
Cited sections: When and where to get medical help - Headaches in pregnancy
Official pregnancy guidance
NHS · Content/publication date: 2024
Accessed: 2026-10-20 UTC · Relevant original-source text inspected; no independent full evidence appraisal
Cited sections: Urgent symptoms and medicine adviceReview date differs from later page update.
- ACR Appropriateness Criteria: Headache, revised 2022
Original imaging appropriateness guideline
American College of Radiology · Content/publication date: 2022
Accessed: 2026-10-20 UTC · Original ACR scenario tables retrieved with Firecrawl after native 403; selected tables inspected
Cited sections: Variant 2 and Variant 8 appropriateness tables; contrasting red-flag scenariosCriteria are scenario specific.
- Are investigations anxiolytic or anxiogenic? A randomised controlled trial of neuroimaging to provide reassurance in chronic daily headache
Original randomized trial
Howard L and colleagues · Content/publication date: 2005
Accessed: 2026-10-20 UTC · Original indexed PubMed abstract read in full using Firecrawl; full study appraisal not completed
Cited sections: Original abstract: methods, follow-up, anxiety and resource resultsAbstract only; incomplete questionnaire follow-up.
- A randomized trial on the effects of regular water intake in patients with recurrent headaches
Original randomized trial
Spigt M and colleagues · Content/publication date: 2012
Accessed: 2026-10-20 UTC · Original PubMed abstract read in full using Firecrawl; full study appraisal not completed
Cited sections: Original abstract: eligibility, 102 randomized, quality-of-life and headache-day outcomesAdvice intervention; selected baseline fluid intake.
- Acupuncture for the prevention of tension-type headache
Systematic review
Linde K and colleagues / Cochrane · Content/publication date: 2016
Accessed: 2026-10-20 UTC · Original Cochrane summary and full abstract inspected; individual trial appraisal not repeated
Cited sections: Review summary and original abstract: search date, participants, usual-care and sham comparisonsReview searches ended in early 2016.
Scope & review
- Population
- Adults and caregivers; pediatric and pregnancy cautions explicitly separated; NICE covers age 12 and older
- Exposure or intervention
- Headache patterns, history, diary, investigation and selected prevention evidence
- Comparison
- Primary versus secondary headache; routine versus indicated imaging; trial and review-specific comparisons
- Outcomes
- Understanding patterns, appropriate assessment, functioning, worry and headache frequency
- Timeframe
- Source and publication dates remain separate; checked 2026-10-20 UTC
- Jurisdiction
- UK public guidance, Australian pediatric guidance and US imaging criteria retain their scope
Bounded original-source research and comparison with existing guide bodies, tables and FAQs. Selected guideline passages and original study methods/results support linked claims. No systematic search, formal evidence grade or qualified clinical review is claimed.
Sources checked on their individual access dates. Selected sources were checked; ongoing surveillance and qualified review have separate statuses on the coverage page.
Revision history
- 2026-10-20 UTC: New guide drafted for integration; qualified clinical review remains pending.
What this article still leaves open
- Complete subtype-specific treatment comparisons and current absolute benefit–harm estimates.
- How diary-assisted care and different reassurance approaches affect long-term outcomes in diverse populations.
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