There are a bunch of illnesses that have real pain and suffering as a symptom, but don&#x27;t have any identifiable cause.<p>Pain is sometimes one of these. The pain the person reports is real pain - you can do scans and see it - but it doesn&#x27;t have a physical cause.<p>It&#x27;s likely that these people experience strong place o responses.<p>But the. We know that cognitive behaviour therapy is used for cancer patients, and we wouldn&#x27;t normally describe their pain as psychological.<p>So, pain is complex and fascinating and difficult.