acephalgic

adjective
ace·​phal·​gic | \ ˌā-sə-ˈfal-jik How to pronounce acephalgic (audio) \

Medical Definition of acephalgic

of a migraine
: characterized by visual disturbances (as flashing or flickering lights) without an accompanying headache Approximately 20% of migraineurs may experience acephalgic attacks of migraine at one time or another.— Donald M. Pedersen — see also acephalgic migraine