ABSTRACT
Recognized Means it has been reported to occur as a feature or association
Characteristic Features that occur often enough so as to be of some diagnostic value and whose absence might lead to doubts about the diagnosis
Diagnostic, essential and Must occur to make a diagnosis typical features
Specific or pathognomonic Features that occur in the named disease and no other
Can be or may be Features are reported as occurring
Commonly, frequently, is All imply a rate of occurrence greater than 50% likely or often
Particularly associated Implies a significant association in some samples with sufficient numbers
Implicit Implied although not plainly expressed
Explicit Expressly stated
Exclusively Features that occur in the named condition and no other
Invariably Implies the occurrence of a feature without a shadow of doubt
Includes Similar to ‘occurs’, i.e. makes no mention of frequency
Majority More than 50%
