Voluntary Ingestion of <i>Cortinarius</i> Mushrooms Leading to Chronic Interstitial Nephritis

‘Magic mushrooms’ ingestion among the drug-using population has become a popular cheap way to get hallucinogenic effects which is not free of complications. One of these is acute renal failure related to <i>Cortinarius </i>genus intake. This one greatly resembles ‘magic mushrooms’ and confusion is possible for inexperienced collectors. We report the case of a young male ex-drug addict who developed acute tubulointerstitial nephritis after voluntary ingestion of <i>Cortinarius orellanus</i>. The clinical picture was preceded by a long latency period, had an insidious course without any data of hepatoxicity and evolved to a chronic state. Renal biopsy showed nonspecific histopathological findings. In summary, it is important to bear this possibility in mind when facing an acute tubulointerstitial nephritis of unknown origin in a drug-taking patient.