What is the threshold requirement for an individual to prove they are suffering from chronic pain?

1 This is a threshold requirement that cannot be overlooked. Our pain cases interpret a statute that provides: "An individual's statement as to pain or other symptoms shall not alone be conclusive evidence of disability as defined in this section; there must be medical signs and findings ... which show the existence of a medical impairment ... which could reasonably be expected to produce the pain or other symptoms alleged." 42 U.S.C. Sec. 423(d)(5)(A) (Supp. V 1987). See Swenson v. Sullivan, 876 F.2d 683, 687 & n. 2 (9th Cir.1989)