When a Migraine Builds Slowly: Early Warning Signs and Prevention Strategies

Not every migraine strikes out of the blue. For many people, the pain builds slowly, sometimes over hours or even days before the actual headache begins.

Early Signs a Migraine May Be Coming

Slow-building migraines often follow a prodrome phase, which includes subtle symptoms that appear before the headache.

Common early warning signs include:

• Food cravings (especially chocolate, carbs, or salty snacks)

• Mood changes such as irritability, anxiety, or sudden bursts of energy

• Neck stiffness or soreness

• Fatigue or frequent yawning

• Sleep disruptions

• Digestive changes like nausea or constipation

Everyone’s symptoms differ, and some may not notice these early signs at all. Hormones, age, and individual triggers all play a role.

How Long Do These Symptoms Last?

The prodrome can last from 4 to 72 hours before the headache phase begins. Some people become good at spotting their own patterns over time, especially with symptom tracking.

What Is Migraine Aura?

About 25% of people with migraine experience aura. This usually occurs 15 to 60 minutes before the headache phase.

Symptoms may include:

• Visual effects: flashing lights, zigzag lines, or blind spots

• Sensory changes: tingling or numbness (often on one side)

• Speech issues: trouble finding words or speaking clearly

Aura is caused by temporary changes in brain activity. Not everyone with migraine experiences it.

When the Headache Hits

The headache phase can last 4 to 72 hours and may include:

• Throbbing pain (often on one side)

• Light and sound sensitivity

• Nausea or vomiting

• Pain that worsens with movement

Recovery: The Migraine “Hangover”

After the headache fades, many people experience postdrome symptoms for up to 48 hours:

• Exhaustion

• Brain fog

• Mood swings

• Dizziness or balance issues

• Lingering light or sound sensitivity

Understanding the phases of a slow-building migraine can help you spot the signs early and potentially reduce the severity of the attack. If you’re unsure about your symptoms or treatment plan, please see a doctor or headache specialist.