Headache, Migraine, and Tension Headache: How to Recognize Each Type

What is a Headache?

According to the World Health Organization, nearly 50% of the global population has experienced at least one episode of headache in the past year. Despite this prevalence, and even though most sufferers rely on over-the-counter medications for symptom relief, the vast majority have never consulted a doctor. This remains true even in cases of frequent recurrence.

Cephalalgia (also called headache) is a condition that manifests primarily as head pain. According to the WHO, migraine ranks among the top 20 most disabling health conditions worldwide, due to its profoundly incapacitating characteristics.

Effective treatment of headache depends, above all, on an accurate diagnosis of the specific type. A precise classification is essential because it allows the correct pharmacological and non-pharmacological approaches to be identified and applied.

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Classification of Headaches

The international reference standard for headache classification is provided by the International Headache Society (IHS), whose criteria are published in the International Classification of Headache Disorders, 3rd edition (ICHD-3). Headaches are classified based on their symptoms and underlying mechanisms.

The primary distinction is between:

• Primary headaches: Headaches that occur without an identifiable underlying disease or structural cause. In these cases, the headache itself is the condition.
• Secondary headaches: Headaches that result from an underlying disease or condition, such as a dental abscess, tumor, or stroke. Once the cause is treated or removed, the headache typically goes away.

Primary headaches are further subdivided into:

• Migraine
• Tension-type headache (muscular-tension type)
• Cluster headache
• Other primary headache disorders

The following table summarizes the key clinical features distinguishing the three main primary headache types:

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Migraine

Migraine is a recurrent, neurological disorder characterized by episodes lasting between 4 and 72 hours (up to 3 days). It is substantially more prevalent in women (female-to-male ratio of approximately 3:1) and typically begins during young adulthood, though it can occur at any age.

Diagnostic symptoms of migraine (ICHD-3 criteria):

• Unilateral pain, which typically affects one side of the head.
• Pulsating or throbbing quality, which differs from the pressing quality of a tension headache.
• Moderate to severe intensity, which is sufficient to limit or prohibit normal activities.
• Worsening with routine physical activity (e.g., climbing stairs, walking).
• Nausea and/or vomiting.
• Photophobia (hypersensitivity to light) and/or phonophobia (hypersensitivity to sound), which both occur during attacks,

Migraine aura: Approximately 30% of migraine patients experience aura, which refers to focal neurological symptoms. These symptoms usually occur 20 to 60 minutes before the headache and resolve completely. Aura most commonly manifests as:

• Visual aura: Scintillating scotoma (shimmering arc of light), zigzag lines, flashing lights, or temporary visual field loss
• Sensory aura: Unilateral numbness or tingling (paresthesia) spreading from fingers to face
• Speech aura: Transient aphasia (difficulty finding words)
• Motor aura (rare): Temporary weakness. This subtype is called hemiplegic migraine

Premonitory symptoms (prodrome): Many patients experience symptoms hours to days before an attack:

• Excitatory symptoms: Irritability, hyperactivity, insomnia, euphoria, frequent yawning, excessive thirst
• Inhibitory symptoms: Fatigue, weakness, depression, difficulty concentrating, food cravings

Common trigger factors (highly variable between individuals):

• Environmental: Weather changes, strong odors, bright lights, altitude changes
• Dietary: Alcohol (particularly red wine), nitrates (preserved meats), tyramine (aged cheeses), excessive or withdrawn caffeine, skipped meals
• Emotional: Stress, anxiety, or emotional upset, along with the “let-down” period that often follows stress
• Hormonal: Menstruation (catamenial migraine, where attacks occur perimenstrually due to estrogen withdrawal), hormonal contraceptives
• Sleep changes: Both excessive and insufficient sleep
• Dehydration and heat

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Tension-Type Headache

Tension-type headache (TTH) is by far the most common form of headache in the general population. It can present as episodic (fewer than 15 days per month) or chronic (15 or more days per month for more than 3 months).

Clinical characteristics:

• Pressing or tightening quality, often described as a “band around the head” or a “heavy weight”
• Bilateral (both sides); unlike migraine, which is typically unilateral, this condition affects both sides
• Mild to moderate intensity, which is generally not severe enough to prohibit daily activities
• Duration: 30 minutes to 7 days

Key features differentiating TTH from migraine:

• Physical activity does not worsen TTH symptoms (in fact, mild exercise sometimes helps)
• No significant nausea or vomiting (nausea may be mild in chronic TTH)
• Either photophobia or phonophobia may be present, but not both simultaneously (unlike migraine, where both are typically present)

Common triggering factors: Stress, anxiety, depression, poor posture, poor sleep, dehydration, and prolonged static neck/shoulder positions.

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Cluster Headache

Cluster headache is a relatively uncommon but extraordinarily painful primary headache disorder that predominantly affects men (male-to-female ratio of approximately 4:1). It is characterized by active periods (clusters), during which attacks occur regularly, alternating with remission periods that can last weeks to months or even years.

Clinical characteristics:

• Severe to excruciating, unilateral pain, consistently on the same side during any given cluster period, is centered around the eye, temple, or forehead
• Stabbing or piercing quality, often described as feeling like a “hot poker in the eye”
• Duration: 15–180 minutes per attack (characteristically brief but very intense)
• Attack frequency: During an active cluster period, attacks range from 1 to 8 per day. They follow a striking circadian pattern; attacks tend to occur at predictable times, often waking the patient from sleep

Distinctive associated autonomic features (ipsilateral to the pain):

• Lacrimation (tearing)
• Conjunctival injection (red eye)
• Nasal congestion and rhinorrhea (runny nose)
• Eyelid edema (swelling)
• Ptosis (drooping eyelid) and miosis (constricted pupil), which together form a partial Horner’s syndrome
• Facial sweating or flushing

Unlike migraine patients, who usually look for stillness and a dark, quiet room, cluster headache patients are typically agitated and restless. During an attack, they often pace or rock because of the extreme pain intensity.

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Secondary Headaches

A secondary headache is a head pain that is caused by, and is a symptom of, an underlying medical condition. Identifying secondary headaches is critically important because they may indicate serious or life-threatening pathology requiring urgent evaluation and treatment.

Causes of secondary headaches include: cranial trauma, infections (meningitis, encephalitis, sinusitis), stroke, subarachnoid hemorrhage, cerebral venous sinus thrombosis, tumors, giant cell arteritis, idiopathic intracranial hypertension, and many others.

“Red flag” warning signs requiring immediate medical evaluation (emergency department if necessary):

Seek emergency care immediately if any of these features are present:

• “Thunderclap” onset: The patient describes the “worst headache of my life”, with maximum intensity reached within seconds. This is the hallmark presentation of subarachnoid hemorrhage until proven otherwise.
• New severe headache in a person over 50 years of age, particularly if it represents a change from their previous headache pattern.
• Fever, stiff neck (nuchal rigidity), and altered consciousness form the classic triad of bacterial meningitis.
• Focal neurological deficits: Motor weakness, sensory loss, aphasia, diplopia, ataxia, or confusion accompanying headache.
• Progressive worsening over time, especially if it does not follow the typical pattern of a known primary headache disorder.
• Onset with physical exertion, coughing, sneezing, or Valsalva maneuver.
• New headache in a patient with cancer, HIV, or immunosuppression.
• Papilledema on eye examination.

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Diagnosis

The diagnosis of headache is primarily a clinical process based on a detailed patient history and careful physical examination. The physician classifies the headache using the ICHD-3 international criteria.

The clinical interview is the cornerstone of headache diagnosis. Key information to elicit includes:

• Frequency: How many days per month are affected?
• Duration: How long does each episode last?
• Location: Where exactly is the pain? Is it one-sided or both-sided?
• Quality: What does the pain feel like (throbbing, pressing, stabbing)?
• Intensity: On a scale of 1–10, how severe is the pain?
• Associated symptoms: Nausea, vomiting, photophobia, phonophobia, aura, autonomic features?
• Triggers and modifiers: What makes it worse or better?
• Impact: Does it limit or prevent normal activities?
• Prior treatments and their efficacy
• Family history of headache

The headache diary: A valuable diagnostic and monitoring tool. Patients record each attack, its characteristics, potential triggers, and response to medication. Both paper-based and digital diary apps are available.

Neurological examination: This assessment evaluates motor function, sensation, coordination, reflexes, cranial nerves, and fundoscopy. Its purpose is to identify any abnormalities that may indicate organic pathology.

Imaging (MRI or CT) is NOT required for most primary headaches. It is reserved for cases where “red flags” are present or when the clinical picture changes unexpectedly. Indiscriminate neuroimaging in patients with classic migraine or tension headache adds cost, radiation exposure (CT), and patient anxiety without clinical benefit.

Blood tests and other investigations may be ordered in specific circumstances. For example, inflammatory markers like ESR or CRP may be checked if giant cell arteritis is suspected. A lumbar puncture may be performed if subarachnoid hemorrhage is suspected, even when the CT scan appears normal.

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Treatment

Modern headache management pursues three interconnected goals:

1. Effectively treating the acute attack: the goal is to relieve pain as quickly as possible
2. Preventing future attacks: reducing frequency, severity, and duration*
3. Preserving quality of life involves several key steps, such as preventing the development of medication overuse headache (MOH). This condition is a common complication that occurs when acute medications are taken too frequently

Acute Attack Treatment

Symptomatic medications should be taken as early as possible at the onset of pain, ideally at the first sign of a migraine attack. Delaying treatment significantly reduces efficacy.

Non-specific analgesics and NSAIDs:

• Ibuprofen, naproxen sodium, aspirin: First-line options for mild to moderate migraine and tension-type headache
• Paracetamol (acetaminophen): A useful option, particularly during pregnancy or when NSAIDs are contraindicated
• Combination analgesics: Some formulations combining aspirin, paracetamol, and caffeine show enhanced efficacy for migraine

Triptans (serotonin 5-HT₁B/₁D receptor agonists):

• Specifically developed for migraine and cluster headache, these treatments have no role in tension-type headache
• Mechanism: Cause selective vasoconstriction of dilated cranial vessels and inhibit trigeminovascular pain transmission
• Available agents: sumatriptan (the original; also available as nasal spray and subcutaneous injection), zolmitriptan, rizatriptan, almotriptan, eletriptan, frovatriptan, naratriptan
• Most effective when taken early in the attack; less effective if taken during established pain
• Contraindicated in patients with significant cardiovascular or cerebrovascular disease

Novel acute medications:

• Gepants (e.g., rimegepant, ubrogepant): These CGRP receptor antagonists are effective for acute migraine. They can be used both to treat acute attacks and as preventive therapy. A key advantage is that they do not cause vasoconstriction, so they are safe for patients with cardiovascular contraindications to triptans. Additionally, they show efficacy in preventing medication overuse headache.
• Ditans (e.g., lasmiditan): These are selective 5-HT₁F agonists. They effectively treat migraine without the cardiovascular vasoconstrictive concerns associated with triptans. However, they may cause CNS side effects, such as dizziness and somnolence.

For cluster headache specifically:

• High-flow oxygen therapy (100% O₂ at 12–15 L/min via non-rebreather mask for 15–20 minutes) is the first-line acute treatment for cluster headache. It is highly effective.
• Subcutaneous or intranasal sumatriptan is rapid-acting and highly effective for aborting cluster attacks.
• Intranasal zolmitriptan, an alternative triptan formulation, is used for cluster headache.

Anti-emetics:

• Metoclopramide, prochlorperazine, or domperidone treat migraine-associated nausea. They may also enhance absorption of concurrently taken analgesics by normalizing gastric motility.

Preventive Therapy (Prophylaxis)

Prophylaxis is indicated when:

• Headaches occur more than 3–4 days per month
• Attacks are severely disabling even if infrequent
• Acute medications are ineffective or overused (risk of MOH)
• Specific conditions (hemiplegic migraine, migraine with brainstem aura) make certain acute treatments risky

Traditional preventive medications:

• Beta-blockers (propranolol, metoprolol): First-line for migraine prevention; also useful for managing comorbid hypertension and anxiety
• Tricyclic antidepressants (amitriptyline, nortriptyline): Particularly useful for chronic tension-type headache and comorbid insomnia or depression; taken at low doses (well below antidepressant doses)
• Antiepileptic drugs (topiramate, valproate): Well-evidenced for migraine prevention; topiramate also useful for weight management in overweight migraine patients
• Calcium channel blockers (verapamil): The drug of choice for cluster headache prevention during active cluster periods
• Candesartan, lisinopril: Antihypertensives with evidence for migraine prevention

Anti-CGRP monoclonal antibodies (a major therapeutic revolution):

• Mechanism: These biologic drugs specifically block Calcitonin Gene-Related Peptide (CGRP), the key neuropeptide that mediates migraine pain and neurogenic inflammation, or its receptor.
• Available agents: Erenumab (Aimovig), fremanezumab (Ajovy), galcanezumab (Emgality), eptinezumab (Vyepti).
• Administration: Subcutaneous injection once monthly, or quarterly for some medications. This can be self-administered at home, offering a convenient alternative to infusion-based biologics.
• Clinical impact: These treatments have transformed migraine prevention. They are highly effective, with approximately 50% of patients achieving at least a 50% reduction in monthly migraine days. They also offer excellent tolerability profiles and pose no cardiovascular concerns.
• Indication: Currently approved for episodic and chronic migraine prevention in adults with at least 4 migraine days per month who have failed or not tolerated ≥2 conventional preventive treatments

Botulinum toxin (OnabotulinumtoxinA / Botox):

• Specifically approved for chronic migraine prevention (≥15 headache days/month, of which ≥8 are migrainous).
• Administered as 31 to 39 injections across seven specific head and neck muscle areas every 12 weeks, these treatments are performed by specialist physicians.
• Effective in approximately 60–70% of appropriately selected patients.

Neuromodulation devices (non-invasive):

• Transcranial magnetic stimulation (TMS): Approved for both acute and preventive migraine treatment
• Non-invasive vagus nerve stimulation (nVNS): Approved for cluster headache and migraine
• Supraorbital nerve stimulation (Cefaly): A transcutaneous electrical stimulation device for migraine prevention
• Remote electrical neuromodulation (REN): An upper arm device for acute migraine treatment

Lifestyle and Non-Pharmacological Approaches

Lifestyle optimization plays an integral, not optional, role in headache management. Evidence shows that behavioral interventions can reduce headache frequency just as effectively as pharmacological prevention does in some patients.

• Regular sleep: Consistent sleep and wake times, including on weekends, help prevent sleep-related migraine triggers.
• Adequate hydration: Dehydration is a potent and underappreciated headache trigger; aiming for at least 1.5–2 liters of water daily is recommended.
• Regular meals: Never skipping meals; consistent meal timing prevents hypoglycemia-related triggering.
• Regular moderate physical exercise: There is strong evidence that this helps prevent headaches. You should aim for at least 150 minutes per week of moderate-intensity aerobic activity.
• Stress management: Biofeedback (particularly thermal and EMG biofeedback), progressive muscle relaxation, mindfulness-based stress reduction (MBSR), and cognitive-behavioral therapy (CBT) all have level A evidence in migraine and tension headache prevention.
• Limiting caffeine intake: Both excessive consumption and abrupt cessation can trigger headache; consistent, moderate intake is preferable.
• Avoiding known personal triggers: Using a headache diary to identify and subsequently modify individual triggers.

Nutritional supplementation with evidence:

• Magnesium (400–600 mg/day as magnesium citrate or glycinate): Shown in multiple trials to reduce migraine frequency; particularly recommended for women with catamenial (menstrual) migraine.
• Riboflavin (Vitamin B2) (400 mg/day): Randomized controlled trials demonstrate meaningful reduction in migraine frequency, with excellent safety profile.
• Coenzyme Q10 (300 mg/day): Some evidence for migraine prevention; particularly considered in patients with mitochondrial dysfunction.
• Melatonin: Some evidence for migraine and cluster headache prevention.

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Other Headache Types and Special Situations

Headache and Stress

Stress is the most frequently identified headache trigger. Both physiological factors, such as physical exertion, pain, or illness, and emotional stress can precipitate attacks. People with migraine often exhibit heightened emotional reactivity. They also tend to have a lower threshold for stress-induced neurochemical changes. These changes include the release of substances like CGRP, substance P, and shifts in serotonin, all of which alter cerebrovascular tone and trigger the migraine cascade.

For tension-type headache, stress plays a key role, particularly anxiety and depression. Treatment addressing the psychological component (psychotherapy, cognitive-behavioral therapy, biofeedback) can be as effective as pharmacological approaches.

Headache During Pregnancy

In approximately 80% of pregnant women with a prior history of migraine, attacks significantly improve or completely resolve during the second and third trimesters. This improvement is likely due to the sustained elevated estrogen levels, which help stabilize the hormonal environment. However, first-trimester headache may paradoxically worsen due to estrogen fluctuation.

Medication use during pregnancy requires extreme caution:

• Most triptans should be avoided (limited safety data, though sumatriptan has the most reassuring profile).
• NSAIDs should be avoided, particularly in the third trimester (risk of premature closure of the ductus arteriosus and oligohydramnios).
• Paracetamol (acetaminophen) is the safest option for acute pain relief. It should be used at the lowest effective dose for the shortest duration.
• Non-pharmacological approaches should be prioritized: biofeedback, relaxation techniques, acupuncture, trigger avoidance, and adequate hydration.

Always consult a physician before taking any medication during pregnancy.

Brain Tumor

Brain tumors are a rare but important secondary cause of headache. Features that raise concern include:

• Progressively worsening headache over weeks to months
• Worse in the morning or with lying flat
• Associated neurological symptoms: seizures, personality changes, focal weakness, cognitive decline, visual changes
• Vomiting (particularly projectile, without preceding nausea)

Brain tumors do not typically cause isolated headache without other neurological features in the early stages.

Bruxism

Bruxism, the grinding or clenching of teeth (most commonly during sleep), causes chronic muscular tension in the masseter, temporalis, and cervical muscles. This tension may trigger or perpetuate tension-type headache, often felt as a dull, bilateral pain in the temples or jaw area upon waking. A custom-fitted occlusal splint (bite guard), prescribed and fitted by a dentist, is the primary treatment and can substantially reduce headache frequency by preventing nocturnal bruxism.

Weekend Headache

Some people reliably develop headaches on weekend mornings, which is a well-recognized pattern with several contributing mechanisms:

• Changes in sleep patterns: Sleeping significantly later disrupts the circadian rhythm and alters cerebrovascular tone
• Caffeine withdrawal: Missing the usual morning coffee after a week of regular consumption causes compensatory vasodilation
• Behavioral changes: Different meal timing, more alcohol consumption on Friday/Saturday evenings, different physical activity levels

Management: Maintaining consistent sleep/wake times and caffeine intake 7 days a week, including weekends, is the most effective preventive strategy.

Caffeine and Headache

Caffeine has a dual and sometimes paradoxical relationship with headache:

• Acute analgesic effect: Caffeine enhances the efficacy of analgesics (aspirin, paracetamol, ibuprofen) by 40%, which is why it is included in some combination headache medications.
• Withdrawal headache: Abrupt cessation of regular caffeine consumption (even after just a few days of daily use) causes rebound vasodilation and a characteristic bilateral, throbbing headache within 12–24 hours. It peaks at 20–51 hours and can last up to 9 days.

Recommendation: Reduce caffeine consumption gradually rather than abruptly, and maintain a consistent daily intake to avoid dependency and withdrawal episodes.

Headache and Allergies

The relationship between allergies and headache is complex and often misunderstood. Many patients attribute their migraine to “allergies”, but the connection is nuanced:

• True IgE-mediated food allergies are rarely direct migraine triggers.
• Dietary sensitivities to vasoactive substances (such as tyramine in aged cheeses, histamine in fermented foods, or nitrates in preserved meats) can precipitate migraine, but this is not a true immunological allergy.
• Allergic rhinitis: The systemic inflammation associated with allergic rhinitis, along with the sinus congestion and pressure it produces, can genuinely worsen migraine frequency and severity during pollen season. This likely occurs through shared inflammatory pathways, including mast cell activation and histamine release.

Benign Sexual Headache

Primary headache associated with sexual activity (coital cephalalgia) presents as a severe, bilateral headache occurring during sexual activity. It may be gradual in onset (related to muscular tension) or explosive in onset at orgasm (the classic “thunderclap” presentation).

While most cases are benign, the explosive thunderclap variant at orgasm must always be evaluated urgently on first occurrence to exclude subarachnoid hemorrhage, which presents identically and is a life-threatening emergency. Subsequent recurrences of an established pattern can typically be managed conservatively.

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Headache and Nausea

Nausea is a characteristic associated symptom of migraine, present in up to 90% of migraine patients during attacks, and is one of the ICHD-3 diagnostic criteria. It can range from mild nausea to incapacitating vomiting.

Other common causes of combined head pain and nausea include:

• Alcohol excess: Hangover headache with nausea from toxic alcohol metabolites and dehydration
• Gastritis or other gastrointestinal conditions
• Hypoglycemia: Low blood sugar causes headache and nausea
• Serious conditions that always warrant emergency evaluation: Meningitis (fever + neck stiffness + headache + nausea), subarachnoid hemorrhage (thunderclap headache + nausea/vomiting), hypertensive emergency, CO poisoning

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Frequently Asked Questions

How do I make a headache go away?

To choose the correct approach, an accurate diagnosis of the headache type is essential. For an occasional, mild headache, a readily available anti-inflammatory (ideally taken at the very first sign of pain) may be sufficient. More frequent or severe forms require specific treatment strategies, ideally guided by a neurologist or headache specialist.

What medication should I take for a headache?

Aspirin, ibuprofen, and paracetamol (acetaminophen), chosen in consultation with your doctor or pharmacist based on your medical history, are among the most widely used options for headache relief. However, if headaches do not respond to these medications or are excessively frequent, a specialist medical evaluation is necessary for a more precise diagnosis and targeted treatment.

Why does my headache get worse when I move?

Worsening of head pain with routine physical activity (such as walking upstairs, bending, or moving the head) is a characteristic diagnostic feature of migraine and is one of the official ICHD-3 diagnostic criteria for the condition.

Why do I always have a headache?

Chronic daily headache is a condition that absolutely requires medical evaluation. Even frequent, high-impact headache disorders, once accurately diagnosed, can benefit from highly effective pharmacological and non-pharmacological preventive treatments. Common causes of frequent headache include:

• Chronic tension-type headache
• Chronic migraine (≥15 headache days/month)
• Cluster headache (during active cluster periods)
• Medication overuse headache (MOH), perhaps the most common and underdiagnosed cause

How long does a headache last?

The three most common types have the following characteristic durations:

• Migraine: 4–72 hours
• Tension-type headache: 30 minutes to 7 days
• Cluster headache: 15–180 minutes per attack

Can I have more than one type of headache?

Yes, this is possible, though not the most common scenario. Some patients have both migraine and episodic tension-type headache. Careful clinical history and headache diary documentation are key to identifying which type is occurring during any given episode.

How can I prevent headaches?

Many neurologists consider lifestyle optimization as important as, or even more important than, pharmacological treatment for headache prevention. Key evidence-based recommendations include:

• Consistent sleep and wake times every day of the week (including weekends)
• Regular meals: never skipping breakfast; consistent meal timing
• Adequate hydration: at least 1.5 liters of water per day
• Regular, moderate aerobic exercise, at least 3–4 times per week
• Limiting caffeine: maintaining a consistent, moderate daily intake
• Stress management through relaxation techniques, biofeedback, mindfulness, or psychological support
• Headache diary: to identify and modify personal triggers

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Sources and Bibliography

• International Headache Society – ICHD-3 Classification
• Italian Society for the Study of Headache (SISC)
• ANIRCEF (Italian Neurological Association for Headache Research)
• Lipton RB, et al. “Prevalence and Burden of Migraine in the United States”. Headache. 2001;41(7):646–657.
• Goadsby PJ, et al. “Pathophysiology of Migraine: A Disorder of Sensory Processing”. Physiological Reviews. 2017;97(2):553–622. doi:10.1152/physrev.00034.2015
• Dodick DW. “A Phase-by-Phase Review of Migraine Pathophysiology”. Headache. 2018;58(Suppl 1):4–16.
• Ashina M, et al. “Migraine”. Nature Reviews Disease Primers. 2021;7(1):1–20. doi:10.1038/s41572-021-00283-z
• American Migraine Foundation – Headache Types
• WHO – Headache Disorders Fact Sheet
• MedlinePlus – Headache