👉 Insanity is a condition of mental illness characterized by delusions, hallucinations, and lack of rational thought. It is generally considered to be an inability to form coherent thoughts or make logical decisions due to severe mental disorders such as schizophrenia, bipolar disorder, or depression. In some cases, it may also include other forms of cognitive impairment that impair an individual's ability to understand their surroundings or participate in social interactions.