What Is a Migraine?

Migraine is a neurological condition that causes recurring attacks of head pain and other symptoms, often including nausea and sensitivity to light or sound. It can interrupt work, sleep, and everyday activities. A clinician diagnoses migraine from the overall symptom pattern and evaluates whether another condition could explain it. Treatment can address an attack and reduce future attacks.[1]

What does a migraine attack feel like?

Many people picture migraine as a pounding headache on one side. That pattern is common, but it is not the only presentation. Pain may affect both sides, feel like pressure, or change during an attack. What accompanies the pain can be as informative as where it hurts.

For example, someone may need to stop moving, turn off the lights, and leave a noisy room. Another person may notice nausea before the pain becomes intense. Describing these details is more useful than trying to decide whether your headache is severe enough to count.

In adults, untreated or unsuccessfully treated migraine attacks commonly last 4–72 hours. Clinicians look for a combination of features, including pain quality, effect of routine activity, and associated symptoms. Meeting a few features on a checklist does not establish a diagnosis by itself.[2]

Think about function as well as pain: Could you read? Finish a meeting? Prepare a meal? Care for children? A headache that seems manageable on a pain scale may still substantially disrupt your day.

Migraine can involve more than the headache phase

An attack may have several phases, although not everyone experiences each one. Early changes can include fatigue, repeated yawning, difficulty concentrating, or a change in appetite. Some people experience aura. After the headache settles, they may still feel drained or mentally slow.[1]

These experiences are easy to overlook. If you report only the hours when pain was strongest, your clinician may underestimate the time an attack affected you. A short note about the day before and the recovery period can help explain the full burden.

Symptoms that are new, persistent, or unrelated to your usual attacks deserve evaluation. Migraine should not become a catch-all explanation for every symptom.

What is migraine aura?

Aura refers to temporary neurological symptoms, often visual changes such as shimmering lines or a spreading blind spot. Sensory changes or language difficulty can also occur. Many people with migraine never have aura, and those who do may have some attacks without it.[3]

A familiar, previously evaluated aura pattern is different from a first episode of weakness, speech trouble, or vision loss. If new symptoms suggest stroke, call 911. Do not assume they are aura because you also have head pain.[4]

The words "ocular migraine" and "visual migraine" are used inconsistently. Describe exactly what happened instead: whether one or both eyes seemed affected, how symptoms began, how long they lasted, and whether they fully resolved.

How is migraine diagnosed?

Diagnosis begins with the story of your headaches. A clinician may review your medical history, perform an examination, and decide whether testing or an in-person assessment is needed. An MRI is not a test that confirms migraine; imaging is used when the history or examination raises concern about another cause.[1]

Prepare these details:

You do not need a perfect diary before seeking care. A reasonable estimate is useful, especially if you clearly identify it as an estimate.

What causes migraine?

Migraine involves brain and pain-processing pathways. Family susceptibility and several environmental or biological influences may contribute. It is not explained by one universal food, one personality trait, or a lack of willpower.[1]

It can be tempting to search for a single trigger that explains every attack. A better starting point is to look for repeated patterns while maintaining a practical daily routine. An attack without an obvious trigger is still worth discussing and treating.

Avoid blaming yourself for symptoms. The purpose of observing sleep, meals, stress, or hormonal patterns is to inform care, not to create an impossible list of things you must avoid.

How is migraine treated?

There are two main treatment goals. Acute treatment addresses an attack that is happening. Preventive treatment aims to make future attacks less frequent or burdensome. Some people need both.[5]

Choosing a plan involves more than picking a drug name. Your clinician considers other health conditions, medication interactions, pregnancy plans, previous responses, and cost. A treatment that suits a friend may be inappropriate for you.

Ask for a plan you can explain in your own words: which medicine serves which purpose, when to use it, what limits apply, and when to contact the care team. Also agree on how you will judge improvement. More reliable participation in daily life can matter as much as a lower pain score.

When a headache needs urgent attention

Seek emergency care for a sudden, explosive headache or headache with new weakness, confusion, seizure, or major vision change. Stroke-like symptoms warrant 911 even when they improve.[4] A new or progressively changing headache needs clinical assessment rather than automatic treatment as migraine.

Frequently asked questions

Is every severe headache a migraine?

No. Severity alone does not identify the cause. Clinicians consider the onset, associated symptoms, pattern over time, and examination. Other headache conditions and medical problems can also produce severe pain.

Can migraine happen without aura?

Yes. Aura is not required for migraine. Tell your clinician about symptoms you actually experience rather than trying to fit a particular description.[2][3]

Can migraine treatment help even if attacks have lasted for years?

A longstanding history is still worth reviewing. The treatment goal is a workable plan that reduces burden, improves function, and remains tolerable. Bring previous treatment records so the discussion can build on what you have already tried.[5]

For ongoing, nonurgent headaches

Learn how TeleHeadache works and whether clinician-reviewed online care may be an appropriate next step. Some symptoms require an examination, testing, or a different level of care.

This article provides general education and does not replace a personal medical evaluation. Do not delay urgent or emergency care while waiting for an online response.