Migraine without aura is the most common type of migraine, accounting for about 80% of all migraine cases. It means you experience the full migraine attack, including intense head pain, nausea, and sensitivity to light or sound, but without the visual or sensory disturbances (called “aura”) that precede the headache in the other 15 to 20% of cases. You may also see it called “common migraine,” which is the older term for the same condition.
How It Feels During an Attack
The hallmark of migraine without aura is throbbing or pulsing head pain, typically on one side, though it can affect both. The pain is moderate to severe, enough to interfere with normal activities like walking, working, or climbing stairs. Physical movement tends to make it worse, which is why most people retreat to a dark, quiet room.
Alongside the pain, you’ll usually experience at least one of these: nausea or vomiting, sensitivity to light (photophobia), or sensitivity to sound (phonophobia). Some people also become sensitive to smell and touch. An untreated attack lasts anywhere from 4 to 72 hours. If your headaches consistently match this pattern and you’ve had at least five episodes, that meets the formal diagnostic threshold for migraine without aura.
The Prodrome: Early Warning Signs
Even without aura, many people get early signals that a migraine is coming. This is the prodrome phase, sometimes called the “preheadache,” and it can start hours or even days before the pain hits. Common prodrome symptoms include irritability, unusual fatigue, food cravings, neck stiffness, frequent yawning, difficulty concentrating, and changes in mood. Some people notice increased urination or trouble sleeping.
Recognizing your prodrome pattern is genuinely useful. If you can identify that a migraine is building, treating it early, during this window, tends to be more effective than waiting until the pain is fully established.
What’s Happening in Your Brain
Migraine pain originates from a network of nerve fibers that wrap around the blood vessels and membranes covering the brain. When this system activates, the nerve endings release inflammatory signaling molecules, particularly one called CGRP. These molecules trigger a cascade: blood vessels dilate, surrounding tissue becomes inflamed, and the pain-sensing nerves fire intensely.
At the same time, the brain’s own pain-modulation systems appear to malfunction during an attack. Normally, your brain filters and dampens pain signals. In migraine, that filtering breaks down, which is part of why light, sound, and even mild physical activity become unbearable. The sensitivity to light, for instance, appears to be directly linked to CGRP activity. Animal research has shown that increasing CGRP levels in the brain produces measurable light-aversion behavior.
Common Triggers
Migraine without aura shares the same broad set of triggers as other migraine types. Hormonal shifts are among the most common, particularly the drop in estrogen around menstruation. Sleep disruption, whether too little or too much, is another reliable trigger. Stress is a major factor, though migraines often strike during the “let-down” period after stress rather than during the stressful event itself.
Dietary triggers vary from person to person and include alcohol (especially red wine), aged cheeses, caffeine withdrawal, and skipping meals. Environmental triggers like bright or flickering lights, strong smells, and weather changes also contribute. Most people have a combination of triggers, and a single trigger alone may not be enough to set off an attack. It often takes two or three converging on the same day.
How It Differs From Migraine With Aura
The key difference is straightforward: migraine with aura includes a distinct phase of neurological symptoms that develops before or alongside the headache. Aura typically involves visual disturbances like zigzag lines, blind spots, or flashing lights, but can also include tingling in the face or hands, difficulty speaking, or even temporary weakness on one side of the body. These symptoms build over 5 to 60 minutes and then resolve.
Migraine without aura skips this phase entirely. The pain and associated symptoms arrive without that kind of neurological preview. This distinction matters beyond classification. Research from the All of Us database, which analyzed hundreds of thousands of health records, found that people with migraine with aura have about a 33 to 42% higher risk of stroke compared to those with migraine without aura. Both groups carry a higher stroke risk than people without migraine at all, but the aura subtype carries the greater concern. This is one reason doctors may factor your migraine type into decisions about certain medications, particularly hormonal contraceptives.
Diagnosis
Migraine without aura is diagnosed based on your symptom history, not brain scans or blood tests. A doctor will look for the pattern: recurring attacks of moderate to severe, usually one-sided, pulsating headache lasting 4 to 72 hours, worsened by routine activity, accompanied by nausea or light and sound sensitivity. You need at least five attacks fitting this profile, and no other condition that better explains the symptoms.
Imaging with MRI or CT scans is not necessary when your headaches match this typical pattern and your neurological exam is normal. Scans become relevant only when something unusual is present: a sudden first-ever severe headache, aura symptoms that are prolonged or one-sided, headaches that are always on the same side, or a significant change in the character or frequency of your attacks. If your migraines have been consistent for years and your doctor hasn’t ordered a scan, that’s appropriate care, not an oversight.
Treatment Approaches
Treatment splits into two categories: stopping an attack once it starts (acute treatment) and reducing how often attacks happen (preventive treatment).
For mild to moderate attacks, over-the-counter pain relievers like ibuprofen, aspirin, or acetaminophen are considered first-line options, especially when taken early. Combining a pain reliever with an anti-nausea medication can improve effectiveness. If one anti-inflammatory doesn’t work for you, a different one in the same family might, so it’s worth trying alternatives before moving on.
For moderate to severe attacks, triptans are the standard migraine-specific treatment. They work by targeting the serotonin receptors involved in the migraine process, constricting dilated blood vessels and reducing the inflammatory signaling that drives the pain. Newer treatments target CGRP, the inflammatory molecule directly involved in migraine pain, and are available as both acute and preventive options.
One important limit: acute treatments should be used no more than two to three days per week. Using them more frequently can lead to medication overuse headache, where the treatment itself starts triggering more headaches. If you find yourself reaching for acute medication that often, it’s a sign that preventive treatment, taken daily or monthly to reduce attack frequency, would be a better strategy.