Naproxen Induced Acute Interstitial Nephritis with Renal Cortical Necrosis.

Drug induced acute interstitial nephritis is an idiosyncratic reaction following a drug exposure. The commonest drugs implicated are nonsteroidal anti-inflammatory drugs (NSAIDs), antibiotics and proton pump inhibitors. Renal cortical necrosis is a rare cause of acute kidney injury caused by severe and sustained vasoconstriction of small renal vessels. There is a change in the epidemiology of acute kidney injury especially in developing countries where drug induced acute kidney injury is becoming increasingly common. Naproxen is known to cause renal failure by renal papillary necrosis, tubular damage and acute interstitial nephritis. We present a case of Naproxen induced acute interstitial nephritis with acute cortical necrosis. To the best of our knowledge this is the first documented case of Naproxen induced renal cortical necrosis.