Gonorrhoeal arthritis is a form of septic arthritis, its pathology and symptomatology being in many respects the same. It may, in favorable cases, limit itself to the synovial membrane, in which event the symptoms will yield more readily to treatment, though the affection in any event is an acute one, and a diagnosis as to extent is difficult to make owing to the extreme pain of even slight motion. +Symptoms.+ These are similar to those of septic arthritis, except that usually only one joint is affected and the existence of a gonorrhoeal infection can always be determined. Both knees, or both ankles, but more commonly, only one joint, are affected, accompanied by severe constitutional symptoms. There rarely occurs any indication of sinus formation or of spontaneous drainage in this variety of arthritis, and it is held by many, that in cases where this tendency exists, there is a mixed infection, other pus producing organisms being present. +Treatment.+ The original infection of the urologic tract must receive the utmost care, in order to eradicate the supply of germs to the circulation. The injection of anti-gonococcic sera or vaccines finds its best application in these cases. The local treatment consists of rest and immobilization of the extremity affected. The application of either extreme heat or cold to the joint is agreeable and efficacious. There are many reasons in justification of either of these treatments over the other, but in general it may be said that, in the acute stage, cold is better, while in the latter stages, heat will accomplish more to establish easy motion of the part and to lessen the danger of ankylosis. Active or arterial hyperemia by baking, is especially valuable in the subacute stage. +Prognosis.+ In those cases in which the pain and swelling is severe and the constitutional symptoms alarming, we may always expect a true arthritis to exist. In these cases much exudate is formed in the joint, which upon organization, leads to fibrous bands and limitation of the joint function (_fibrous ankylosis_). In the milder cases, ankylosis is the exception, if proper remedial measures are carried out. +Rheumatic Arthritis.+ Rheumatic articular affections are common, and are both acute or chronic. In the light of recent investigations it is believed that many of these cases are due to foci of infection in various parts of the body which pollute the blood stream with organisms which subsequently find lodgment in either the organs or joints. Infections existing in the tonsils and teeth roots have been shown to act in this way. There may, however, be cases directly attributable to rheumatism, though these are not so well understood. +Acute Rheumatism.+ One or several joints may be attacked simultaneously. Subsidence of the inflammation may occur, while others are becoming inflamed.