The case history of a patient developing tubulointerstitial nephritis
(TIN) during carbamazepine therapy is described. After withdrawal of t
he drug and introduction of prednisone renal function normalised. TIN
is a rare side-effect of carbamazepine of which only a few cases have
been described. There seems to be a remarkable time interval of 2 mont
hs between the onset of therapy with carbamazepine and the development
of TIN.