Psychosis refers to an abnormal condition of the mind described as involving a "loss of contact with reality". It can be caused by genetics, trauma, medical conditions, or drugs. Symptoms include hallucinations, delusions, disorganized thinking and behavior, and difficulty concentrating. Diagnosis involves considering psychosis in someone withdrawing socially or performing worse at work/school without explanation. Treatment options include antipsychotic medications, psychotherapy, and cognitive behavioral therapy.