幻覚 (げんかく, genkaku) Japanese meaning: hallucination | KotomoraI had hallucinations from lack of sleep.
It's nothing more than an illusion.
Usage patterns
幻覚を見るto see/experience a hallucination
He hallucinated because of the high fever.
幻覚を起こすto cause/induce hallucinations
That drug can cause strong hallucinations.
幻覚に襲われるto be overcome by hallucinations
She was overcome by hallucinations on a sleepless night.
N1
幻覚 is a hallucination in the clinical or psychological sense, while 幻 is the everyday, often poetic word for an illusion or phantom.
hallucination; hallucinatory symptom