Most people who get migraine with aura describe something visual. Zigzag lines, a blind spot that grows, shimmering edges. Some get numbness or trouble finding words.
A 43-year-old woman described to her neurologists something none of that covers. Before one of her attacks, she began giggling, then laughing loudly and unstoppably, aware the whole time that the behavior was out of place. Then the headache arrived, the same kind she had been having for years.
Her case was presented at the American Headache Society's 68th Annual Scientific Meeting in Orlando and published as an abstract in Headache. The investigators called it gelastic migraine, a presentation rare enough that only a handful of descriptions exist in the medical literature.
Laughing Without a Reason, Minutes Before the Headache
The word gelastic comes from the Greek for laughter, and it is borrowed from epilepsy, where gelastic seizures involve laughing as a seizure manifestation.
In this patient, the laughter was stereotyped, meaning it followed the same pattern, and involuntary. She was aware the behavior was unusual as it was happening. The abstract records that the episode included mirth, the internal sense of amusement that sometimes accompanies pathological laughter and sometimes does not. That distinction matters diagnostically because clinicians use the presence or absence of mirth to classify laughing attacks.
What she did not have is as important as what she did. There was no abnormal movement, no twitching or jerking, and no loss of sphincter control. Those absences are among the first things that separate a laughing spell from a convulsive event.
Her migraine history was long and complicated. She had chronic migraine both with and without aura, including visual aura, motor aura, and brainstem-like aura.
Ruling Out the Diagnosis That Laughter Usually Points To
Uncontrollable laughter in an adult is not a symptom clinicians treat casually, because the conditions that classically produce it are serious.
Gelastic seizures are the standard suspicion, and they often point toward a hypothalamic hamartoma, a benign but consequential brain lesion. A multicenter study of 31 patients with laughing or crying seizures, drawn from tertiary epilepsy centers, found that this rare ictal behavior can also originate from a range of cortical locations and lesion types. Pathological laughter can also follow stroke or other structural brain disease.
So the workup went where it had to go. An electroencephalogram was performed to look for epileptiform activity, and an MRI of the brain was performed to look for a lesion. Both came back unremarkable.
With no epileptic or structural explanation available, the investigators recorded the episode as an atypical aura or prodromal symptom of migraine, closely timed to the headache. Their stated conclusion is deliberately modest: this is a rare presentation of gelastic migraine. No positive test showed migraine activity in the moment.
A Migraine Pill Stopped an Attack That Began with Giggling
The detail that gave the case its clinical weight is what happened next. The patient took ubrogepant, and the attack was aborted.
Ubrogepant is an oral calcitonin gene-related peptide receptor antagonist that received its first approval in the United States in December 2019, for the acute treatment of migraine with or without aura in adults. It is not a preventive drug, and its efficacy was established in two large placebo-controlled trials rather than in anything resembling this presentation. She was already on a substantial preventive regimen that included onabotulinumtoxinA, fremanezumab, acetazolamide, and lamotrigine, using ubrogepant as her abortive medication and steroids for rescue.
The investigators treated the response as supporting evidence: an attack that started with laughter behaved like a migraine attack, including in how it responded to a migraine-specific drug. That is suggestive reasoning rather than proof. A single attack resolving after a single dose cannot establish that the drug caused the resolution, and no controlled comparison exists.
The earlier published description of gelastic migraine, a case presented at the American Academy of Neurology, involved a 37-year-old woman whose laughter came without mirth and whose headache frequency improved on verapamil. The two cases differ in their details, which is common when a phenomenon has been documented only a few times. A review of unusual headache syndromes has since treated gelastic migraine as a recognized if vanishingly rare entity.
One Patient, One Episode, and a Conference Abstract
Three limitations should travel with this story wherever it goes.
This is conference abstract material, not a full peer-reviewed case report, so the level of detail available is thin compared with a published paper. It describes one patient and one episode. And the migraine explanation rests on excluding other causes rather than on any positive finding.
None of that makes it uninteresting. Migraine aura is understood as a wave of altered cortical activity, and there is no obvious reason for that wave to be confined to visual or sensory regions. A case in which it appears to have touched the circuitry involved in laughter widens the recognized range of what an aura can look like.
The practical implication is modest and mostly for clinicians. Someone who laughs uncontrollably before a headache should still be evaluated first for seizure and structural disease, because those diagnoses change management. Migraine is considered only after the others have been ruled out.
Key Questions Answered
What is gelastic migraine? It is a very rare presentation in which inappropriate or uncontrollable laughter occurs as a prodromal symptom or atypical aura, closely timed to a migraine headache.
How is it different from a gelastic seizure? A gelastic seizure is an epileptic event in which laughter is the seizure itself. In this patient, an EEG and brain MRI were unremarkable, and there was no abnormal movement or loss of sphincter control.
What did the laughter feel like to her? The abstract describes stereotyped, involuntary laughter accompanied by mirth. She was aware her behavior was unusual, beginning with giggling and progressing to loud, unstoppable laughter.
What stopped the attack? The attack was aborted after she took ubrogepant, an oral CGRP receptor antagonist approved for acute migraine treatment. A single episode in a single patient cannot establish that the drug was responsible.
How strong is the evidence here? Limited. This is a single case presented as a conference abstract rather than a full peer-reviewed report, and the migraine diagnosis rests on the exclusion of other causes.
What should someone do if this happens to them? See a clinician. Uncontrollable laughter preceding headaches warrants evaluation for seizure activity and structural brain disease before migraine is considered the explanation.
