Question

people go both \up\ and \down\ emotionally when they are experiencing
somatic symptom disorders.
neurocognitive disorders.
bipolar and related disorders.
dissociative disorders.

Explanation:

Bipolar and related disorders involve alternating between elevated (emotionally "up") and depressed (emotionally "down") mood states. Somatic symptom disorders focus on physical symptoms. Neurocognitive disorders relate to cognitive function decline. Dissociative disorders involve disruptions in consciousness, memory, etc.

Answer:

bipolar and related disorders.