172 Legg, etc., p. 68.
The arthritic affections in hæmophilia are very remarkable, and so common as to form prominent features in the disease. There may be simple pain in and about the joints, or swelling with redness and signs of intense inflammation. The attacks may come on suddenly with fever, resembling closely acute rheumatism. The large joints are usually affected, the knees most often, then the elbows, ankles, and shoulders. There may be repeated attacks, and at last great crippling and deformity. The small joints are rarely affected. In cold, damp weather the attacks are most common; occasionally they follow traumatism. In addition to the joint troubles, bleeders suffer much with irregular pains in the limbs, particularly during change of weather, or these pains with arthritis may usher in an attack of hemorrhage.
Many other irregular symptoms are described in the monographs, some of which have no intimate relation with the disease. The anæmia has, of course, all the features of the traumatic form. Digestive troubles, after the bleeding, are common, and are due to the anæmia. The Buel Brothers173 mention that in two of their cases the patients showed a marked inclination to eat sand and earth. Children with the hemorrhagic tendency pass through the ordinary diseases of infancy like others. Whooping cough is very liable to cause epistaxis. Rheumatism and scrofula are said to be common in bleeder families.
173 Op. cit.
The blood in bleeder cases is, as a rule, normal, so far as our present means of investigation enable us to decide. When a hemorrhage has continued for some time, it is thin and watery, but at the beginning of the bleeding the blood is usually rich in corpuscles and fibrin and coagulates firmly. The salts have been found increased in quantity. No change has been noted in the corpuscles, the number of which is stated by several observers to be increased. Prior to a hemorrhage there may be, according to some writers, a state of plethora or increase in the total quantity of blood, and the tolerance of the loss, so much greater in bleeders than in ordinary persons, is adduced in support of this view.
MORBID ANATOMY.—Not many changes other than those of profound anæmia have been found in the bodies of bleeders. An unusual thinness of the walls of the vessels, first noted by Bladgen in 1817,174 has been met with in a number of cases; in a few instances hypertrophy of the heart; in others a rounded foetal shape of the organ. Within the past few years careful microscopical examination has been made of the tissues and blood-vessels of bleeders. Kidd175 found degeneration of the muscle-fibres of the middle coat of the arteries, and the endothelium of the small arteries, veins, and capillaries was swollen, proliferated, and some of the small veins were blocked with the products. Legg176 reports a case in which Klein made a most careful examination with negative results, and he stated that of six such examinations which had heretofore been made, in only one case (Kidd's) were important changes found. At the same meeting of the London Pathological Society, Theodore Ackland also reported a case with negative results as regards histological changes.
174 Medico-Chirur. Transactions.
175 Medico-Chirurgical Society's Transactions, vol. lxi.
176 Lancet, Oct. 27, 1884.
The joint changes have been studied in a number of cases. Hemorrhage has been found in and about the capsule, and the acute swelling may be due largely to it, as was shown in Hutchinson's case,177 in which he aspirated the joint. When it lasts any time, there is great staining of the cartilages and discoloration. There may be inflammation of the synovial fringes and erosion and destruction of the articular surfaces (Legg).