aura

https://doi.org/10.1351/goldbook.11623
Constellation of symptoms experienced before a migraine headache or seizure.
Note: It may consist of flashing light, blurred vision, an odor, numbness, weakness, difficulty in speaking, or the feeling of a wind blowing.
Source:
PAC, 2015, 87, 841. (IUPAC Glossary of terms used in neurotoxicology (IUPAC Recommendations 2015)) on page 850 [Terms] [Paper]