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[Cryoproteinemias]
Biochemical cryoproteins are divided in cryoglobulins (type I-III), plasma-cryoproteins (heparin precipitable factor, cryofibrinogen and cryofibrin), and fibronectin. While cryoglobulinemias and plasma-cryoproteinemias are mainly caused by internal diseases, fibronectin may be a physiological substance. Because of skin lesions as purpura, necrosis or cold urticaria the patients rather often consult dermatologists at first. Furthermore arthralgias, kidney diseases, neurologic symptoms and lung involvement can be observed. For diagnosis a accelerated blood sedimentation rate at 37 degrees C and a decelerated at 4 degrees C is helpful. By further investigations underlying internal diseases have to be disclosed. In the therapeutical efforts the treatment of the underlying diseases is most important. Additional plasmapheresis and immunsuppressive treatment may be successful.
Biochemical cryoproteins are divided in cryoglobulins (type I-III), plasma-cryoproteins (heparin precipitable factor, cryofibrinogen and cryofibrin), and fibronectin. While cryoglobulinemias and plasma-cryoproteinemias are mainly caused by internal diseases, fibronectin may be a physiological substance. Because of skin lesions as purpura, necrosis or cold urticaria the patients rather often consult dermatologists at first. Furthermore arthralgias, kidney diseases, neurologic symptoms and lung involvement can be observed. For diagnosis a accelerated blood sedimentation rate at 37 degrees C and a decelerated at 4 degrees C is helpful. By further investigations underlying internal diseases have to be disclosed. In the therapeutical efforts the treatment of the underlying diseases is most important. Additional plasmapheresis and immunsuppressive treatment may be successful.