LSD art is any art or visual displays inspired by psychedelic experiences and hallucinations known to follow the ingestion of LSD (lysergic acid diethylamide, also known colloquially as acid). Artists and scientists have been interested in the effect of LSD on drawing and painting since it first became available for legal use and general consumption. LSD causes visual hallucinations, audiovisual synaesthesia, and experiences of de-realisation. When these effects are mixed with an artist, they often illustrate their hallucinations.