Hand numbness in dialysis patients may be caused by electrolyte disorders, poor peripheral blood flow and carpal tunnel syndrome. 1. Electrolyte disorders: When patients are on dialysis, it is easy to lead to electrolyte disorders in the body, and elevated blood potassium may lead to numbness in the hands. 2. Poor peripheral blood circulation: When dialysis patients have poor peripheral blood circulation, it will lead to insufficient local blood supply to the arm, which may lead to numbness. 3. Carpal tunnel syndrome: Carpal tunnel syndrome means that the median nerve is compressed in the carpal tunnel of the wrist in the process of dialysis, which leads to hand numbness and hand pain. When dialysis patients have hand numbness, they should go to regular hospitals for examination and treatment in time to avoid delaying the condition and causing serious consequences.