depression – n. a serious medical condition in which a person feels very sad, hopeless, and unimportant and often is unable to live in a normal way
anxiety – n. fear or nervousness about what might happen
psychiatrist – n. a doctor who treats mental or emotional disorders; a doctor of psychiatry
psychologist – n. a scientist who specializes in the study and treatment of the mind and behavior; a specialist in psychology
treatment – n. something that deals with a disease, injury, etc., in order to make someone feel better or become healthy again; medical care
patient – n. a person who receives medical care or treatment
benefit – n. a good or helpful result or effect
adhere to – phrasal verb to act in the way that is required by (something, such as a rule, belief, or promise)