It's kind of worse with alcohol because the psychosis associated with that as an exacerbating factor is more related to alcoholic encephalopathy, Wernicke-Korsakoff syndrome etc... much of which can be brought on with self medicating with alcohol. Definitely a component but more like psychosis and mania drive you to drink because these experiences are awful more than a causative factor that's been proven

https://www.ncbi.nlm.nih.gov/books/NBK459134/