The regulations explaining the employee's responsibility to provide evidence of disability, the kind of evidence, what medical evidence consists of, and the consequences of refusing or failing to provide evidence or to have a medical examination are found in Sec. 220.45 through Sec. 220.48. The regulations explaining when the employee may be requested to report for a consultative examination are found in Sec. 220.50 and Sec. 220.51. The regulations explaining how the Board evaluates conclusions by physicians concerning the employee's disability, how the Board evaluates the employee's symptoms, what medical findings consist of, and the need to follow prescribed treatment are found in Sec. 220.112 through Sec. 220.115. [56 FR 12980, Mar. 28, 1991. Redesignated at 63 FR 7541, Feb. 13, 1998]