CLASSIFICATION.--(_a_) Gout as a specific form of articular inflammation is classified according to its location--cheiragra, onagra, podagra, gonagra, etc. (_b_) Gout as a constitutional disease is classified, 1st, according to the structures affected--_e.g._ articular gout; tegumentary gout, embracing mucous as well as cutaneous affections of gouty origin; nervous gout; parenchymatous or visceral gout; 2d, according to the degree of the inflammatory process--acute, subacute, and chronic; 3d, according to certain irregularities manifested in the development and progress of gouty lesions as metastatic, retrocedent, and suppressed gout. This classification of constitutional gout is based upon the well-recognized clinical observation in the history of gouty persons and gouty families, that the characteristic lesions of the joint-structures are often correlated with lesions of the skin, mucous and serous membranes, vessels, nerves, and parenchymatous organs, which are marked by the same blood dyscrasia that exists in articular gout, and which are most successfully treated by the same measures which experience has suggested in the management of the arthritic disease. Musgrave in his work[1] treats of a great number of varieties of gout, as follows: De arthritide anomala; de colica arthritica; de diarrhoea arthritica; de dysenteria arthritica; de abscesse intestinorum arthritica; de melancholia arthritica; de syncope arthritica; de calculo renum arthritico; de asthmate arthritico; de catarrho, tussi, et peripneumonia arthritica; de phthise arthritica; de angina arthritica; de capito dolore et {109} vertigine arthritica; de apoplexia arthritica; de paralysi arthritica; de doloribus in corpore vagis, fixis; de ophthalmia, de erysipelate et achoribus arthriticis; etc. [Footnote 1: _De Arthritide Anomala, sive Interna, Dissertatio_, Geneva, 1715.]