This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nephrotic and Nephritic syndrome, Subject name: Medicine
Interstitial nephritis is common with? 
Select and explain. 
A. NSAID, B. Blackwater fever, C. Rhabdomyolysis, D. Tumor lysis syndrome
A: NSAID
Answer: A: NSAID 
Explanation: Choices B, C, D lead to acute tubular necrosis and hence by exclusion the answer is A. Causes of Acute Interstitial Nephritis Drugs like beta-lactams, quinolones, NSAID, COX-2 inhibitors, phenytoin, valproate Infections like streptococcus, staphylococcus Connective tissue disorders like SLE, Sjogren Light chain nephropathy Urate nephropathy Causes of Chronic Interstitial Nephritis V.U.R Sickle cell disease Hypokalemic nephropathy