This article explains the signs and symptoms of migraine brain fog and how it may manifest before, during, and after a migraine episode.
If you experience “brain fog” during a migraine episode, you may:
- feel confused
- have difficulty learning or remembering
- have difficulty paying attention
- have trouble speaking or reading
These signs and symptoms are temporary, and researchers have not found any evidence to suggest that they lead to a higher risk for long-term cognitive decline.
Brain fog may be worse during some parts of a migraine attack than others. Migraine attacks
Learn more about symptoms you may experience during the prodrome phase.
The aura phase of a migraine episode can cause visual or other sensory disturbances in addition to brain fog. According to the American Migraine Foundation (AMF), this phase often lasts a few minutes to an hour and includes seeing flashing lights or dots, having blind spots, or being hypersensitive to smells and sounds.
During the aura phase, you may also feel confused, weak, or dizzy, or have trouble speaking. This could also be called “brain fog.”
Many people will develop throbbing pain afterward, though it’s possible to have the aura and not develop the headache.
Learn more about migraine aura symptoms.
The headache phase of a migraine attack is characterized by pulsing or throbbing pain, usually on one side of your head.
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- reasoning or cognitive processing difficulties
- impaired ability to pay attention
- difficulty talking or the inability to talk
- reading or writing difficulties
This phase can last anywhere from
Learn more about the difference between headache and migraine.
In the phase following a migraine episode, which is called the postdrome phase, you may feel exhausted and irritable. Some people describe it as feeling “wiped out” or “hung over.” You may also continue to feel confused or have difficulty concentrating.
It may be difficult to function well for a little while after a migraine. However, the symptoms should disappear within a day or so, and your brain fog should lift.
Learn more about how long a migraine episode can last.
It may be possible to prevent or lessen the severity of migraine brain fog. According to the AMF, taking medications or engaging in other therapies, such as avoiding triggers, may stop the progression of the migraine episode and relieve symptoms.
For people who experience migraine attacks, there are
- Acute treatment: Also called abortive treatment, this involves taking steps to halt migraine progression once it has begun. Your doctor may recommend nonsteroidal anti-inflammatory drugs (NSAIDs), prescription medications such as triptans, or procedures such as transcutaneous supraorbital nerve stimulation.
- Preventive treatment: Certain treatments may help reduce the frequency of migraine episodes. This may involve taking medications such as beta-blockers or antidepressants and avoiding triggers whenever possible.
Learn more about migraine prevention and treatment.
The term “brain fog” refers to cognitive impairment that can occur during a migraine attack. Some people may experience difficulty reading, speaking, thinking, or concentrating.
The earlier you can recognize the onset of a migraine, the better. Early treatment may shorten the duration of the episode and get you back to being pain-free and thinking clearly.
If you are experiencing severe headaches, whether or not you have “brain fog” along with them, talk with your doctor. They can help you develop a treatment plan.