What Is a Migraine? Causes, Symptoms, Stages, and Relief

Anyone who’s ever had a migraine knows it’s not just a headache. The throbbing pain, the nausea, the sensitivity to light — it can completely derail a day. But what’s actually happening inside your brain during an attack? Understanding migraine as a neurological disorder, not just a severe headache, is the first step toward finding effective relief.

Global prevalence: 1 in 7 people affected ·
Typical duration of attack: 4 to 72 hours without treatment ·
Common symptom: Throbbing pain, usually on one side of the head ·
Sex bias: 3 times more common in women than men ·
Typical onset age: Peaks in 30s but can start at any age

Here are the essential facts about migraine in one table.

The pattern: migraine is defined by its duration, scope, and biological basis, not just by head pain.

What exactly causes a migraine?

Neurological overstimulation and nerve sensitivity

Migraine is fundamentally a neurological disorder, not a purely vascular one. The brain of a person with migraine is hypersensitive to stimuli. According to Cleveland Clinic (headache specialist team), the trigeminal nerve — a major pain pathway — becomes overactivated, releasing inflammatory substances that dilate blood vessels and trigger pain signals. This cascade explains why light, sound, and even smell can feel unbearable during an attack.

Genetics and family history

Migraine runs in families. The NINDS (U.S. National Institute of Neurological Disorders) notes that having a first-degree relative with migraine significantly increases your risk. Specific gene variants involved in neurotransmitter regulation and ion channels are being studied, but the heritability is complex.

Serotonin and brain chemical imbalances

Serotonin levels fluctuate during migraine attacks. Low serotonin is thought to allow the trigeminal nerve to become more excitable. This is why some acute treatments work by boosting serotonin activity. A 2022 review in PMC (NIH database) confirms that modulating serotonin pathways is a key mechanism in triptan drugs.

The implication: migraine is not a psychological problem but a biological vulnerability embedded in nerve pathways and genetics.

What exactly happens during a migraine?

The four phases: prodrome, aura, attack, postdrome

Not everyone experiences all four phases, but the Mayo Clinic (neurology department) describes a typical progression that can last days. Prodrome — mood changes, fatigue, food cravings — can begin 24–48 hours before the headache. Aura, if it occurs, involves visual or sensory disturbances and lasts 5–60 minutes. The attack phase itself brings the throbbing head pain, often one-sided, along with nausea and sensitivity to light and sound. Postdrome, or “migraine hangover,” leaves many feeling drained and foggy for a day or more.

What occurs in the brain during an attack

During a migraine, the brain shows temporary changes in blood flow and electrical activity. Cleveland Clinic explains that a wave of neuronal depression spreads across the cortex, followed by a period of hyperexcitability. Inflammatory substances like CGRP (calcitonin gene-related peptide) are released, causing the blood vessels in the meninges to dilate and produce pain.

The catch: knowing the phases gives you a window to act early, especially during prodrome when medication can still prevent full-blown pain.

What is the difference between a headache and a migraine?

Four key contrasts, one pattern: migraine is a full-body neurological event, not just a head pain.

The implication: if your headache comes with nausea and light sensitivity, it’s almost certainly a migraine, not a tension headache. That distinction matters because treatment differs.

What are the stages of a migraine?

Prodrome (pre-headache)

About 60% of people with migraine experience prodrome, according to Cleveland Clinic. Symptoms include mood swings, trouble sleeping, fatigue, increased hunger, thirst, and frequent urination. These can start hours or even days before the headache.

Aura

Aura is a temporary neurological symptom that usually precedes the headache. It can be visual (flashing lights, blind spots), sensory (tingling, numbness), or speech-related. Mayo Clinic notes that aura typically lasts 5–60 minutes and is reversible.

Attack (headache phase)

The attack phase is the migraine itself — moderate to severe throbbing pain, often on one side, worsened by routine physical activity. Nausea, vomiting, and extreme sensitivity to light and sound are common. NINDS states that without treatment, this phase lasts 4–72 hours.

Postdrome (migraine hangover)

After the pain subsides, many feel exhausted, confused, and have a stiff neck or lingering sensitivity. Cleveland Clinic describes postdrome as a period of fatigue and difficulty concentrating that can last up to a day.

How to make a migraine go away?

Immediate steps when you feel one coming

• Rest in a dark, quiet room. Reducing sensory input can calm the overstimulated trigeminal nerve.
• Apply cold or warm compresses. Cold can numb the pain; warmth can relax tense muscles.
• Hydrate. Dehydration worsens symptoms, per King Edward VII Hospital.

Acute treatments (OTC and prescription)

For mild attacks, over-the-counter NSAIDs like ibuprofen or aspirin can help, according to NINDS. For moderate to severe attacks, triptans (sumatriptan, zolmitriptan) are the standard of care. A 2022 review in PMC adds that antiemetics like metoclopramide can relieve nausea.

Lifestyle adjustments and prevention

Regular sleep, hydration, and trigger avoidance form the foundation of prevention. For those with frequent attacks (>15 days/month), NINDS notes that botulinum toxin type A or CGRP-targeting therapies can reduce attack frequency.

The pattern: combining immediate physical measures with appropriate medication gives the best chance of stopping an attack early.

What drink will help a migraine?

Caffeinated drinks (tea, coffee) in moderation

Caffeine can constrict blood vessels and enhance the effectiveness of pain relievers. Mayo Clinic notes that a small amount of caffeine can help, but too much can trigger a rebound headache.

Ginger tea for nausea

Ginger has anti-inflammatory properties and can settle the stomach. Anecdotal evidence and some studies support its use for migraine-related nausea, though the 2022 PMC review calls for more rigorous research.

Water for hydration

Dehydration is a known trigger, so staying hydrated is critical. King Edward VII Hospital lists dehydration as a common trigger.

What this means: choosing the right drink is a small intervention that can make a real difference during an attack.

What actually triggers a migraine?

Common triggers: stress, sleep changes, diet, environment

Stress is the most frequently reported trigger, according to King Edward VII Hospital. Skipping meals, dehydration, and changes in sleep patterns (too much or too little) are also common. Environmental factors like bright lights, loud noises, and strong smells can set off attacks.

Hormonal triggers in women

Migraine is three times more common in women than men, largely due to hormonal fluctuations. Cleveland Clinic explains that the drop in estrogen before menstruation is a potent trigger. Many women experience “menstrual migraine” — attacks that occur predictably around their period.

The catch: triggers are individual — what reliably sets off one person’s migraine may be harmless for another.

Quotes from experts

“Migraine is a headache disorder that often causes intense, throbbing pain, usually on one side of the head. It’s frequently accompanied by nausea, vomiting, and extreme sensitivity to light and sound.”

“When the trigeminal nerve is overstimulated, it releases inflammatory substances that cause the blood vessels to swell and produce pain. This is why migraine is more than a headache — it’s a neurological event.”

“The four phases of a migraine — prodrome, aura, attack, and postdrome — can span days for some people. Recognizing the early signs can help you treat it before it peaks.”

For the millions who live with migraine, the gap between what we know and what we can still do better is shrinking. The arrival of CGRP-targeting therapies, backed by the American Headache Society’s 2024 guidance, means that prevention is no longer a guessing game. For someone with chronic migraine, the choice is clear: work with a neurologist to build a personalized plan of acute medication, trigger management, and possibly a modern preventive — or continue to lose days to an attack that could have been stopped earlier.

Frequently asked questions