Mental illness is not an excuse for crime, but it is an important factor. In some cases, the patient's behavior may be affected by the disease, which may lead to criminal behavior. At this time, mental illness can be used as a basis for defense, but it is not an excuse to avoid responsibility and punishment.

For mental illness cases, professional appraisal and evaluation are needed to determine whether mental illness can be used as a defense basis. At the same time, appropriate treatment should be given to mental patients to help them alleviate their illness and restore their health.

Mental patients face great pressure in social life and are full of prejudice and discrimination in society. We should not only treat them as "patients", but also pay attention to their psychological needs and feelings, so that they can integrate into society and get respect and support.

On this issue, slogans cannot replace real thinking and action. We should adopt correct attitudes and measures to support and help mental patients and maintain social justice and stability.