“Is chronic pain a psychological disorder?”

Chronic pain, however, is often more complex. People often think of pain as a purely physical sensation. However, pain has biological, psychological and emotional factors. Furthermore, chronic pain can cause feelings such as anger, hopelessness, sadness and anxiety.

Chronic pain can cause a psychological disorder. Many patients may feel hopeless, isolated, overwhelmed, anxious and depressed. Medical conditions can be so debilitating, that a person may begin to have emotional stressors and sadness - now needing therapy and or medication to help with their emotional status.

Not necessarily, though it can be. Chronic pain can have many etiologies, though sometimes medical professionals cannot find a medical cause to chronic pain, and the question of “is the pain psychological” begins to become a part of the clinical picture. Sometimes when we are psychologically defended, the body will take on those emotional symptoms the mind is not ready to deal with, and it manifests in pain, though this is not always the case. Our psychology and the way we relate to our own pain can also relieve or exacerbate our experience of pain.

There are some psychological components but pain stems from physiological responses to stimuli.

Take a peek at this link as to their interrelationship:
https://www.practicalpainmanagement.com/comorbidity-chronic-pain-mental-health-disorders-how-manage-both