Alvin suffers from both major depression and generalised anxiety disorder. Alvin's diagnoses illustrate that mental disorders can be

A) categorical.
B) comorbid.
C) confounded.
D) epidemiological.

Comorbid

The simultaneous presence of two or more diseases or medical conditions in a patient.

Generalised Anxiety Disorder

A psychological condition characterized by persistent and excessive worry about various aspects of life, often to the point where it interferes with daily functioning.

Major Depression

Major Depression is a mental health disorder characterized by a persistent feeling of sadness and a lack of interest in external activities.