Bart has been diagnosed with major depression. Recently, he has been experiencing hallucinations. He sees mystical beings cloaked in white swooping down from the sky trying to "whisk" him away. Bart is most likely experiencing major depression with features.

Psychotic feature

Explanation:

Depression with psychotic features is called major depression. This is a very critical condition and needs immediate treatment with medication and psychotherapies. Major depression is a critical mental condition. It affects a person in all areas of life such as interpersonal relationships, workplace, social relations, etc. It affects the mood as well as the appetite and libido of a person.  

Symptoms of major depression:

it's