Migraine has a distinctive fingerprint that sets it apart from other headaches, and learning to recognize it can save you years of misdiagnosis and ineffective treatment. The hallmarks are moderate-to-severe pain (often pulsating and usually worse on one side), nausea or vomiting, sensitivity to light and sound, and worsening of the pain with routine physical activity like walking or climbing stairs. But migraine is also a shape-shifting condition with up to four distinct phases and symptoms that overlap with other headache types, which is why roughly half the people who have migraines have never been properly diagnosed.
A Three-Question Quick Check
Researchers developed a simple screening tool called the ID Migraine, and it remains one of the fastest ways to gauge whether your headaches might be migraines. It asks just three questions about your headaches over the past three months: Have they limited your activities for a day or more? Have you felt nauseated or sick to your stomach? Has light bothered you? Answering yes to two out of three gives a sensitivity of about 81% and a specificity of about 75%, meaning it catches most migraines while ruling out most non-migraines.1PubMed. A self-administered screener for migraine in primary care: The ID Migraine validation study A later meta-analysis confirmed the screener is particularly good at ruling out migraine when all three answers are no, dropping the probability of migraine from roughly 59% to about 23%.2PubMed. Diagnostic accuracy of the ID Migraine: a systematic review and meta-analysis
The screener is not a diagnosis; it is a useful first filter. If you answer yes to at least two of those questions, a conversation with a doctor is worth having. If you answer no to all three, there is a good chance your headaches are something else.
The Four Phases of a Migraine Attack
One reason migraine confuses people is that the headache itself is only one part of a larger event. A full migraine attack can unfold through four stages: prodrome, aura, headache, and postdrome.3PubMed Central. The prodrome of migraine: mechanistic insights and emerging therapeutic strategies Not everyone experiences all four, and the phases can vary between attacks in the same person.
The prodrome is a pre-headache warning that can start hours or even a day or two before the pain arrives. Common prodromal symptoms include fatigue, mood changes, food cravings, yawning, neck stiffness, and difficulty concentrating. Many people who track their migraines learn to spot these early signs and use them as a cue to take medication before the headache fully develops.
The aura phase, when it occurs, produces temporary neurological disturbances that typically last under an hour. Up to about 30% of people with migraine experience aura at least some of the time.4PubMed Central. What does a migraine aura look like?-A systematic review Visual symptoms are by far the most common, showing up in about 99% of aura cases, followed by sensory symptoms in roughly a third and speech disturbances in about a fifth.5Brain. A nosographic analysis of the migraine aura in a general population A classic visual aura begins as a flickering, zigzag line near the center of your visual field and gradually spreads to the side, often leaving a temporary blind spot in its wake. Sensory aura typically starts with tingling in the hand, creeps up the arm, then affects the face and tongue. These symptoms march slowly across the body over minutes, which is a useful distinguishing feature from something like a stroke, where neurological deficits appear all at once.
The headache phase itself brings the throbbing, one-sided pain most people associate with migraine, along with nausea, light and sound sensitivity, and sometimes smell sensitivity. It can last anywhere from four to 72 hours. After the headache resolves, the postdrome or “migraine hangover” can leave you feeling drained, foggy, or unusually sensitive for another day or so.
How Migraine Feels Different from a Tension Headache
Tension-type headache is the most common headache, and it is also the one most easily confused with migraine. The classic distinction is that tension headaches produce a dull, pressing pain on both sides of the head, like a band tightening around your skull, while migraine pain tends to be pulsating and concentrated on one side. But those textbook descriptions do not always match reality. Studies show that about 43% of people diagnosed with tension-type headache report throbbing pain, and about 30% say their pain is worsened by physical activity, both features supposedly reserved for migraine.6PubMed. Characteristic and overlapping features of migraine and tension-type headache Meanwhile, about a fifth of migraine patients describe a pressing rather than throbbing quality to their pain.
So if pain quality alone cannot always distinguish the two, what can? Behavior during the attack is revealing. People with migraine tend to actively seek out dark, quiet rooms, try to sleep, apply cold to the painful area, change posture to find relief, and become immobile. People with tension-type headache, by contrast, try fewer coping maneuvers on average and are more likely to try scalp massage.7PubMed. Behavioral response to headache: a comparison between migraine and tension-type headache Perhaps the most reliable everyday test is physical activity: if bending your head forward or walking upstairs makes the headache noticeably worse, that points toward migraine.8PubMed Central. Comparison of clinical characteristics of migraine and tension type headache The presence of nausea, vomiting, or strong light and sound sensitivity further tips the scales.
When It Feels Like a Sinus Headache
One of the most common misdiagnoses in headache medicine is calling a migraine a “sinus headache.” The pain around the cheeks, forehead, and bridge of the nose that people attribute to their sinuses is often migraine in disguise. Migraine can activate the trigeminal nerve, which supplies sensation to the face, producing facial pressure, nasal congestion, and even a runny nose that mimics sinusitis. In one study, patients who presented with self-diagnosed or physician-diagnosed sinus headache were given migraine-specific medication (triptans), and about 82% of them experienced significant headache relief, supporting the idea that their “sinus” pain was actually migraine all along.9PubMed Central / Laryngoscope. Treatment of sinus headache as migraine: the diagnostic utility of triptans
A true sinus headache from bacterial sinusitis usually comes with fever, thick discolored nasal discharge, and reduced smell. If your “sinus headaches” come and go, make light and noise uncomfortable, worsen with activity, and respond to pain medication but keep coming back, there is a good chance they are migraines.
Migraine Versus Cluster Headache
Cluster headache is rarer than migraine but worth knowing about because the two share some features, particularly severe one-sided pain. The differences, however, are dramatic. Cluster attacks are shorter, typically lasting 15 minutes to three hours, and they can strike multiple times in a single day. Migraine attacks last four to 72 hours and rarely exceed one per day.10PubMed Central. Debate: Are cluster headache and migraine distinct headache disorders?
Behavior during the attack is the most telling difference. People in the grip of a cluster headache are restless, pacing the room, rocking back and forth, unable to hold still. People with migraine want to lie down in a dark room and not move. Cluster headache also tends to stay locked on one side of the head, attack after attack, while migraine can switch sides. Both conditions can produce watery eyes, nasal congestion, and drooping eyelids on the painful side, but these autonomic symptoms in migraine tend to be milder, sometimes bilateral, and less consistent from attack to attack.11Journal of Neurology, Neurosurgery & Psychiatry. Cranial autonomic symptoms in migraine: characteristics and comparison with cluster headache
Triggers, Prodromes, and How They Get Confused
People with migraine often identify specific triggers: chocolate, red wine, stress, poor sleep, weather changes. But emerging research suggests some of these “triggers” may actually be early symptoms of the migraine attack itself, misidentified as causes. The prodrome phase can produce food cravings, mood shifts, and fatigue hours before the headache. If you crave chocolate during the prodrome and then develop a headache later, it is natural to blame the chocolate. But the craving may have been the attack announcing itself, not a cause waiting to happen.12PubMed. Insights from triggers and prodromal symptoms on how migraine attacks start: The threshold hypothesis
This does not mean all triggers are illusory. Stress, hormonal changes, and sleep deprivation act as genuine catalysts that lower the threshold for an attack. The current thinking is that some triggers push a brain that is already primed toward an attack over the edge, while some apparent triggers are really just the early manifestation of a process already underway.13PubMed. Migraine prodromes and migraine triggers Keeping a headache diary that tracks not just what happened before the headache but also how you felt in the preceding day or two can help you distinguish between the two.
Red Flags That Call for Urgent Medical Attention
Most headaches, including migraines, are not dangerous. But some headache features suggest a secondary cause, something structural or systemic rather than migraine, that requires immediate evaluation. Neurologists use a checklist called SNNOOP10 to screen for these warning signs.14PubMed Central. Red and orange flags for secondary headaches in clinical practice: SNNOOP10 list The ones most relevant to a person trying to figure out their own headaches include:
- Sudden onset: A headache that reaches maximum intensity within seconds to minutes, sometimes called a thunderclap headache, could signal a brain hemorrhage.
- New pattern: A headache that feels fundamentally different from your usual headaches, or a first-ever severe headache after age 50.
- Neurological symptoms that do not resolve: Weakness, numbness, vision loss, or confusion that persists beyond the headache or comes on abruptly without the gradual march of a migraine aura.
- Fever with headache: Could point to an infection such as meningitis.
- Worsening over weeks: A headache that gets progressively worse rather than coming and going in discrete attacks.
- Post-trauma onset: New headaches starting after a head injury.
If any of these apply, do not assume it is just a migraine. Get evaluated promptly.
The Hormonal Connection
If your headaches cluster around your period, that is one of the strongest clues they are migraines. Menstrual migraine affects roughly 6% of women of reproductive age and is tied to the drop in estrogen levels that occurs just before menstruation.15PubMed Central. Menstrual migraine is caused by estrogen withdrawal: revisiting the evidence The leading explanation, called the estrogen withdrawal hypothesis, holds that it is not low estrogen by itself that triggers the attack but the decline from a higher level, particularly when estrogen falls below a certain threshold after an extended period of higher levels.16PubMed Central. The complex relationship between estrogen and migraines: a scoping review
This helps explain several patterns women notice. Migraines often improve during pregnancy (when estrogen stays high) and can worsen during perimenopause (when estrogen fluctuates unpredictably). Women with migraine also appear to have greater sensitivity to normal hormonal fluctuations than women without migraine. If you notice your worst headaches arriving one to two days before or during your period, especially with nausea and light sensitivity, that timing alone makes migraine the most likely explanation.
What Drives Migraine Pain Under the Hood
You do not need a neuroscience degree to benefit from understanding the basics of what happens in your brain during a migraine, because it helps explain why migraines feel so different from other headaches and why certain treatments work. The key player is the trigeminal nerve, which runs along the face and scalp. During a migraine attack, trigeminal nerve fibers release a signaling molecule called CGRP (calcitonin gene-related peptide), which sets off a cascade of inflammation and nerve sensitization around the blood vessels of the brain’s outer covering.17PubMed Central. CGRP and the Trigeminal System in Migraine18PubMed Central. Calcitonin gene-related peptide (CGRP) and migraine
This inflammatory sensitization is why movement, light, and sound become painful during a migraine: your pain-processing system has turned up its volume knob. It also explains why a newer class of preventive medications, the anti-CGRP antibodies, can reduce migraine frequency by blocking that signaling molecule before it starts the cascade. If your doctor suggests one of these treatments, it is specifically targeting the mechanism that makes migraine distinct from a tension headache.
When Headaches Start Coming More Often
Migraine exists on a spectrum of frequency. Episodic migraine means fewer than 15 headache days per month. Chronic migraine means 15 or more headache days per month for at least three months, with migraine features on at least eight of those days.19PubMed. Episodic and chronic migraine headache: breaking down barriers to optimal treatment and prevention The transition from episodic to chronic is one of the most frustrating aspects of the condition, and one of the most preventable.
A major driver of this transition is medication overuse. If you find yourself reaching for painkillers or triptans on 10 or more days per month, you may be setting up a vicious cycle. Regular use of acute headache medications can itself increase headache frequency, creating what is known as medication-overuse headache.20The Lancet Neurology. Medication-overuse headache People with migraine appear to be uniquely vulnerable to this phenomenon, more so than people with other headache types.21PubMed. Medication overuse headache: history, features, prevention and management strategies If your headaches have been creeping upward in frequency and you are taking acute medication more than two or three days a week, that pattern itself is worth discussing with a doctor, because reducing the overuse is often the first step in getting the headaches back under control.
Migraine in Children
If you are trying to figure out whether your child’s headaches are migraines, the picture is somewhat different from adults. Children’s migraines tend to be shorter, sometimes lasting under two hours, and the pain is more likely to be on both sides of the head rather than one.22PubMed Central. Migraine management: How do the adult and paediatric migraines differ? Young children may not be able to describe nausea or light sensitivity, but you can often see it in their behavior: turning off lights, avoiding the TV, refusing food, looking pale, wanting to sleep. Abdominal migraine, in which the primary symptom is stomach pain rather than head pain, is another variant that mostly shows up in childhood and can puzzle parents and pediatricians alike.
Before puberty, migraine is roughly equally common in boys and girls. After puberty, the gender gap widens dramatically, with about three times as many women affected as men, largely driven by the hormonal mechanisms discussed earlier. If a child has recurrent headaches that come with behavioral withdrawal, pallor, nausea, or sensitivity to stimulation, and a parent has migraine, the probability of migraine is high even if the presentation looks different from the textbook adult version.
Conditions That Often Travel with Migraine
Migraine does not usually exist in isolation. People with migraine show higher rates of anxiety, depression, sleep disorders, and certain pain-related conditions like irritable bowel syndrome and fibromyalgia.23PubMed. Comorbidity in Migraine with Functional Somatic Syndromes, Psychiatric Disorders and Inflammatory Diseases: A Matter of Central Sensitization? These are not coincidences: the current thinking is that shared changes in how the central nervous system processes sensory and pain signals underlie these overlapping conditions. The sensitization that ramps up pain signaling during a migraine attack may, over time, make the whole system more reactive to other kinds of stimuli and stress.
Recognizing these connections matters for two practical reasons. First, if you are dealing with chronic fatigue, gut problems, widespread pain, and headaches, the headaches might be the thread that ties it all together, and treating the migraine component can sometimes improve the other symptoms. Second, some preventive medications used for migraine also help with anxiety or sleep disorders, so a doctor aware of your full picture can choose a treatment that addresses more than one problem at once.