Jackie was involved in a fight

during his teenage years that led to him being stabbed in the arm and needing

hospitalisation. Now, as an adult, Jackie reported feeling pain in his arm and

upper abdomen.  Jackie spent over two

years moving from one medical practitioner to another, seeking aid for the

pains he was suffering. The medical professionals ran several tests and

performed X-rays, which could not reveal any evidence or diagnosis of a medical

condition. Nonetheless, Jackie continued to experience pain in his arm and

upper abdomen and was referred to a Clinical Psychologist for further

assistance. The psychologist is likely to diagnose Jackie with--------------