Symptoms of psychotic breaks vary greatly, usually depending on the circumstances of diagnosis or any contributary substance ingested. Symptoms can range from harmless, sometimes unnoticed delusions, to violent outbursts and major depression. The sufferer may also be unable to distinguish reality from fantasy (for example, believing that a dream really happened or experiencing hallucinations that appear to be real.) Where a bipolar disorder is involved, crying, grandiosity, insomnia, irritability, and persecutory delusions may all or severally manifest themselves as symptoms.[11]