| | restrictive airways disease
trying to make sense of the difference between Restrictive airways disease, chronic obstructive airways disease, chronic obstructive lung disease, small airways dysfunction, small airways disease. Over a period of greater than 10 years have had 4 pulmonary function tests. Results vary from moderate to mild deficiencies in the FVC and FEV1 tests but all are significantly deficient in the FEF 25% - 75% test. Is this (these) conditions cyclical ?