What exactly is the difference between a neurological illness of the brain and a mental illness?

Question

What exactly is the difference between a neurological illness of the brain and a mental illness?

In: Other

Answer 1

One is able to be identified pathological, that is a neurological disease, such as parkinsons, it causes a drop in dopamine levels, it is caused by damaged nerve cells

A mental illness is often idiopathic and more often than not arises from an experienced emotional trauma in which the brains functions have altered. It cannot usually have a precise cause.

I liken it to saying a brain like a computer has hardware and software. Neurological disease is a hardware problem whereas mental illness is often software issues.