Doctor insights on:
The term aura is usually used to describe a visual change that occurs at the onset of a classic migraine. It is typically described as an odd light appearance, color change or other visual illusion associated with the headache. Not all migraines have auras..."common migraines" do not have auras, ...Read more
Is this optical migraine? Flashing zig-zag @periphery of vision. Printed words distorted/stretched at periphery, like they're moving & fading in/out.
44yo new onset migraines with aura. Inbetween migraines, having palinopsia, photophobia and vertigo spells. Vestibular migraines or something else?
Possible: Migraines can cause virtually any neurological symptoms. The rule out thumb is, rule out more serious causes first, so if you have not sought an evaluation yet, please do so. ...Read more
I had auras of colorful zig zags before a migraine . What causes auras to happen? My aura really affected my whole vision. Is that normal for an aura?
Photoparoxysmal resp: Photoparoxysmal responses (ppr) is an abnormal visual sensitivity of the brain in reaction to intermittent photic stimulation. Photosensitivity depends on the intensity, the contrast of the visual stimulus, and the specific frequency of flashing. The flashing patterns of certain games and television shows trigger epileptic seizures in only 5% of epileptics. Photosensitive epileptics peak at 10-14. ...Read more
Triggers: As we better understand migraine, it appears that the brain becomes more sensitive to bright lights and loud noises hours before the migraine starts. The sensitivity to lights may not be the trigger but just a symptom of the headache that has already started. ...Read moreSee 2 more doctor answers
Photic stimulation: Eeg's may include the flashing lights in an attempt to de-synchronize cerebral rhythms to prove presence of epilepsy. Seizures may be seen on dance floors with strobe lights if inappropriate frequencies of flashing. All of these evokes a chemical response from glutamate receptors, and subsequent epileptic discharges. ...Read more
"Petit mal": does not cause flashing lights. Flashing lights don't usually cause Petit Mal (absence seizures) Partial seizures and Generalized Tonic Clonic seizures can be brought on by lights flashing at specific frequencies (also called Nintendo Epilepsy) Absence ( Petit mal) is more likely to be brought on by hyperventilation. These brief generalized seizures typically last 1-3 seconds. ...Read more