The excess immunoglobulins increase the thickness (viscosity) of the blood and cause it to move slowly through the blood vessels. Hyperviscosity syndrome limits blood flow to the skin, fingers, toes, nose, and brain. The blood vessels become overfilled with blood and may leak, causing discoloration of the skin.
diÂ·alÂ·yÂ·sis. Use dialysis in a sentence. pl. -Â·sesÂ·. Chem. any process in which the smaller dissolved molecules in a solution separate from the larger molecules by diffusing through a semipermeable membrane.
dialysis - separation of substances in solution by means of their unequal diffusion through semipermeable membranes. 1  chemical analysis, qualitative analysis - the act of decomposing a substance into its constituent elements.