Does the MMPI differentiate chronic illness from chronic pain?

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Abstract
The relationship between MMPI [Minnesota Multiphasic Personality Inventory] scales and functional limitation for the chronic illness populations of chronic low back pain, migraine headache, hypertension and diabetes was examined. Average MMPI profiles for these groups approximate those of previous studies with the chronic low back group having the most disturbed profile and showing elevations especially on the H [hypochondriasis], Hy [hysteria] and D[depression] scales. Several kinds of analysis demonstrate that, in general, the MMPI group differences can be accounted for by individual self-rated functional limitation. The data do not support attempts at defining a low back pain or chronic pain personality profile apart from the emotional disturbances associated with chronic limitation and disruption of activity.