MANUAL SINGLE NATIONAL DISABILITY (PART I OF II) CHAPTER V 5. DIGESTIVE 5.1 General The criterion for evaluating the gastrointestinal tract is based on the effects of the permanent injury can have on the individual's ability to perform tasks of daily life. The findings of the assessors should be compatible with the patient's physical condition and corroborated by aid diagnostic tests. The irrecoverable of these diseases are usually shown after prolonged observation and treatment. Many of these tests are difficult or impossible to repeat or perform, either because they are expensive, there are many, difficult to perform correctly, for example, Van de Rim to determine steatorrhea, or biopsies of intra- abdominal organs. This difficulty can be supplemented, if alternatives are given the following evidence: a) Consistency, coherence and commonality between the clinical and physical examination provided objective documentation. b) Time evolutio...