Is a person who suffers from a mental illness and kills himself held accountable?

Question:
May Allah reward you, Honorable Shaykh. This questioner says: Is a person who suffers from mental illnesses that lead him to kill himself or commit suicide held accountable for it? Or has he become insane, so he is not held accountable for this act?

Answer:
The one who kills himself without thought or reason is not held accountable. But if he consumed the cause, such as drinking intoxicants and became insane and killed himself, or if he took narcotics, he is the one who caused it, so he is held accountable. As for if something came to him that affected his mind without his intervention or causation, an illness that struck his mind and led to him killing himself, there is no blame on him for this. Yes.