This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chronic Kidney Disease & Diabetic Nephropathy, Subject name: Medicine
Dialysis disequilibrium occurs due to: 
Select and explain. 
A. Cerebral edema, B. Hypeension, C. Alumunium toxicity, D. A Beta2 amyloid deposition
A: Cerebral edema
Answer: A: Cerebral edema 
Explanation: Complications of hemodialysis Dialysis disequilibrium syndrome Dialysis disequilibrium causes fluid shift in brain (Cerebral oedema, seizures) Symptoms- headache, nausea, emesis, vision, muscular twitching, disorientation, hypeension, tremors, and seizures. The condition tends to be self-limited and subside over several hours. Dialysis disequilibrium syndrome is attributed reverse urea effect.