Salt losing nephritis is a feature of-
Interstitial nephritis
Polycystic kidney
Lupus nephritis
Renal amyloidosis
Ans. is 'a' i.e., Interstitial nephritisCAUSES OF TUBULOINTERSTITIAL DISEASESInfectionso Acute bacterial pyelonephritiso Chronic pyelonephritis (including reflux nephropathy)o Other infections (e.g. viruses, parasites) Toxinso Drugso Acute hypersensitivity interstitial nephritis o Analgesic nephropathyo Heavy metalso Lead, cadmiumMetabolic diseaseso Urate nephropathyo Nephrocalcinosiso Hypokalemic nephropathyo Oxalate nephropathyPhysical factorsChronic urinary tract obstructionRadiation nephropathy NeoplasmsMultiple myelomaImmunological reactionsTransplant rejectionSjogren syndromeSarcoidosisVascular diseasesMiscellaneousBalkan nephropathyNephronopthsis - medullary cystic disease complexIdiopathic interstitial nephritisFollowing information have been added in 8th/e of Robbins Aristolochic nephropathyo A syndrome of tubulointerstitial nephritis caused by aristolochic acid, a supplement found in some herbal remedies, has been recognized recently.o The drug forms covalent adducts with DNA and causes a distinctive picture of renal failure and interstitial fibrosis associated with a relative paucity of infiltrating leukocytes.o There is an increased incidence of carcinoma in the kidney and urinary tract.