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Allergic Interstitial Nephritis
Nephritis Interstitial Allergic

Presentation

We present a 48-year-old man who was on warfarin sodium for 2 months and presented with acute renal failure and reddish purplish macules on his hypogastric regions and lower extremities bilaterally. [ncbi.nlm.nih.gov]

Footnotes The section Cases presents brief case reports that convey clear, practical lessons. Preference is given to common presentations of important rare conditions, and important unusual presentations of common problems. [cmaj.ca]

We present a rare case of a pediatric patient with mesalazine-induced interstitial nephritis whose initial presentation with clinical and radiologic signs of pyelonephritis complicated the decision to undergo renal biopsy. [journals.lww.com]

Presented in part at the Fifth International Congress of Nephrology, Mexico City, Mexico, October, 1972. [nejm.org]

Snapshot A 65-year-old man presents to urgent care with a sudden-onset of fever and rash. His review of systems is negative. He was recently started on omeprazole for acid reflux approximately 2 weeks ago. [medbullets.com]

Entire Body System

  • Fever

    Mesalazine therapy was stopped with immediate resolution of fever. [journals.lww.com]

    Depending on the underlying disease, nephritis may present with additional symptoms such as rash, arthralgias, and fever in the case of allergic interstitial nephritis. [amboss.com]

    It is characterized by abdominal pain; fever; nausea; vomiting; and occasionally diarrhea. [icd10data.com]

    Snapshot A 65-year-old man presents to urgent care with a sudden-onset of fever and rash. His review of systems is negative. He was recently started on omeprazole for acid reflux approximately 2 weeks ago. [medbullets.com]

    Definition / general Drug reaction to beta lactam antibiotics, non-steroidal anti-inflammatory drugs, diuretics, other drugs; generally after 2 – 3 weeks after exposure May occur in renal allografts ( Clin Nephrol 2009;72:331 ) Fever, hematuria, azotemia [pathologyoutlines.com]

  • Malaise

    […] cause of drug induced AIN Antibiotics: Penicillins [Methicillin = classic cause], but Cephalosporins, Sulfonamides [Trimethoprim-Sulfamethoxasole], Rifampin and Quinolones [Ciprofloxacin] Rifampin may be associated with: hemolysis, thrombocytopenia and malaise [renalandurologynews.com]

    Clinical Features Clinical suspicion of AIN in patients with AKI usually relies on: 2 the presence of general symptoms test malaise anorexia nausea arthralgia hypersensitivity reactions low grade fever skin rash eosinophilia urinalysis findings typical [medsafe.govt.nz]

    History Part I: Pattern Recognition: Systemic symptoms of allergic interstitial nephritis may include fever, nausea and malaise. The classic triad of fever, rash and eosinophilia is seen in less than 10% of cases. [clinicaladvisor.com]

    There may be slight malaise, but often the only indication of the disease is the presence of albumin and other abnormal substances in the urine. If a blood count is made during this stage, anemia may be found. [medical-dictionary.thefreedictionary.com]

    Practice CMAJ March 03, 2009 180 (5) 535-538; DOI: https://doi.org/10.1503/cmaj.080456 The case: A 57-year-old man presented to hospital with a 2-week history of progressive malaise, myalgia, fever, nausea, vomiting, diarrhea, polyuria and polydipsia. [cmaj.ca]

  • Fatigue

    Despite common nonspecific signs and symptoms—fever, fatigue, weight loss, rash, abdominal pain, nausea, vomiting, and diarrhea—laboratory testing and radiology is inconsistent. [journals.lww.com]

    These symptoms may include: Enlarged kidneys Bloody or cloudy urine Fever Rash Fatigue or unusual sleepiness Abdominal pain Increased or decreased urine output Swelling in the body Fluid retention And more Treatment & Prognosis Patients with nephritis [schmidtlaw.com]

    Gradually renal failure, nausea, vomiting, weight loss, fatigue, and anemia develop. Acidosis and hyperkalemia may follow. [medical-dictionary.thefreedictionary.com]

    Other symptoms of interstitial nephritis include: a fever blood in the urine exhaustion confusion fatigue nausea vomiting a rash water retention swelling weight gain from water retention feeling bloated elevated blood pressure Acute interstitial nephritis [healthline.com]

    In chronic tubulointerstitial nephritis the patient can experience symptoms such as nausea, vomiting, fatigue, and weight loss. [en.wikipedia.org]

  • Constitutional Symptom

    […] nephritis Heavy metal exposure or other causes; mild proteinuria, glucosuria with normal serum glucose Tubulointerstitial nephritisuveitis syndrome Diffuse eosinophilic nephritis with bone marrow and lymphoid granulomas seen in pubertal females with constitutional [aafp.org]

Cardiovascular

  • Hypertension

    Highlights include completely updated information on the role of the kidney in hypertension, afferent and efferent mechanisms of renal sodium retention, and delineation of mutation defects causing congenital nephrogenic diabetes insipidus. [books.google.de]

    Radiation This may occur 6-12 months after radiotherapy, with hypertension, anaemia and oedema. 50% progress to chronic kidney disease. Alternatively, it may develop over several years - presenting with hypertension and proteinuria sometimes. [patient.info]

    D. 3 1 Department of Medicine, Renal-Electrolyte Division, University of Pittsburgh, Pittsburgh, PA, USA; 2 Department of Pathology, Mayo Clinic College of Medicine, Rochester, MN, USA; 3 Division of Nephrology and Hypertension, Department of Medicine [minervamedica.it]

    • Hypertension. • Renal vein thrombosis. • Radiation nephritis. • Hereditary nephropathy associated with hyperuricemia and gout. • Idiopathic. 22. [slideshare.net]

    Peripheral edema and hypertension are uncommon unless renal failure occurs. Symptoms and signs are generally absent in chronic tubulointerstitial nephritis unless renal failure develops. [merckmanuals.com]

Musculoskeletal

  • Back Pain

    She did not notice any dysuria, abdominal pain or change in the colour of her urine. She did however report a remarkable increase in lower back pain that she had attributed to strenuous exercise. [ijponline.biomedcentral.com]

    An attack may produce no symptoms, but more often there are headaches, a rundown feeling, back pain, and perhaps slight fever. The urine may look smoky, bloody, or wine-colored. [medical-dictionary.thefreedictionary.com]

    They admit long-term analgesic use for chronic headaches, low back pain or somatic complaints such as malaise and weakness. They may also have a history of peptic ulcer disease or symptoms. Investigations FBC. U&Es. Urinalysis. [patient.info]

    Some people experience dysuria, and lower back pain. In chronic tubulointerstitial nephritis the patient can experience symptoms such as nausea, vomiting, fatigue, and weight loss. [en.wikipedia.org]

Skin

  • Skin Rash

    […] reaction to beta lactam antibiotics, non-steroidal anti-inflammatory drugs, diuretics, other drugs; generally after 2 – 3 weeks after exposure May occur in renal allografts ( Clin Nephrol 2009;72:331 ) Fever, hematuria, azotemia and eosinophilia Variable skin [pathologyoutlines.com]

    […] or eosinophils Renal atheroemboli also presents with eosinophiluria, eosinophilia, and skin rash rash is typically livedo reticularis with digital infarcts, not maculopapular Treatment Conservative discontinue inciting drug indications for all drug-induced [medbullets.com]

    Fever was present in 80% but, surprisingly, none reported skin rash or arthralgia. Proteinuria was detected in 80% of cases, but only four patients had red blood cells in the urine. Eosinophilia was present in half of the patients only. [hkmj.org]

    Clinical Features Clinical suspicion of AIN in patients with AKI usually relies on: 2 the presence of general symptoms test malaise anorexia nausea arthralgia hypersensitivity reactions low grade fever skin rash eosinophilia urinalysis findings typical [medsafe.govt.nz]

    There were no skin rashes, no joint swelling, and no tenderness on palpation of joints. [consultant360.com]

Urogenital

  • Hematuria

    […] and eosinophilia Variable skin rash May be associated with inactive cytochrome P450 polymorphisms ( Ren Fail 2009;31:749 ) Urinalysis: suggestive of infection (eosinophils, hematuria, proteinuria, pyuria), but culture negative Microscopic (histologic [pathologyoutlines.com]

    […] diseases systemic lupus erythematosus sarcoidosis Pathogenesis type IV hypersensitivity reaction T-cell-mediated attack on tubular cells Prognosis typically resolves after withdrawal of inciting agent Presentation Symptoms primary symptoms fever minimal hematuria [medbullets.com]

    Typical symptoms in both acute and chronic nephritis are painless hematuria (without RBC casts !) and pyuria. [amboss.com]

    pyuria, proteinuria and eosinophiluria, though may be bland Hematuria: present in 90% of cases Macroscopic (Gross) hematuria is classically seen with Methicillin (70% cases) Microscopic hematuria is seen in ~90% cases of Methicillin related and ~60% [renalandurologynews.com]

    Instead, the case presented with hematuria, flank pain, and possible sepsis, which were eventually ruled out. A temporal relation between AIN, causing renal failure, and exposure to the sitagliptin was suspected upon admission. [consultant360.com]

  • Flank Pain

    Drugs with low urine solubility precipitate within the renal tubules → tubular obstruction & toxicity to tubules Symptoms Painless hematuria Flank pain Sterile pyuria Peripheral eosinophilia Rash Fever Arthralgias Patients are usually asymptomatic Renal [amboss.com]

    Signs and symptoms include fever, chills, flank pain, painful and frequent urination, cloudy or bloody urine, and confusion. Diffuse or local inflammation and edema of the interstitial tissue of the kidney, including the tubules. [icd10data.com]

    pain arthralgias can be asymptomatic defining characteristics development of rash after administration of drug Physical exam rash diffuse maculopapular flank/costovertebral angle tenderness Studies Labs serum eosinophilia elevated serum creatinine Urinalysis [medbullets.com]

    A 13-year-old boy with active Crohn disease and medical history of asthma and attention deficit disorder presented with 1-week history of persistent fever, worsening abdominal and flank pain, diarrhea, and lower extremity myalgias. [journals.lww.com]

    Mostly there are no symptoms directly from the urinary tract, but there may be flank pain and haematuria. Diagnosis is suggested by: Patients aged 30-70 years. [patient.info]

  • Oliguria

    Fractional Excretion of Sodium (FENa) may be useful if oliguria 7. CLOSE monitoring of DAILY AM weights and STRICT Intake and Output records each 24hrs Imaging Studies 1. [renalandurologynews.com]

    A nephrologist should always be consulted in severe cases (robust increases of creatinine value, robust proteinurie, oliguria or anuria, increases in body weight) for further diagnosis and therapy. [thieme-connect.com]

    • Eosinophilia, oliguria, glucosuria, aminoaciduria, phosphaturia, raised urinary creatinine, renal acidosis and proteinuria. 63. • Interstitial oedema, mononuclear inflammatory infiltrate consisting of lymphocytes and macrophages. • Eosinophils and [slideshare.net]

    Clinical Features Patients with AIN typically present with nonspecific symptoms of acute renal failure, including oliguria, malaise, anorexia, or nausea and vomiting, with acute or subacute onset. 5 The clinical presentation can range from asymptomatic [aafp.org]

Workup

Renal ultrasound may be ordered as part of the workup for acute renal failure, however, there are no pathognomonic signs for AIN on ultrasound. F. Over-utilized or “wasted” diagnostic tests associated with this diagnosis. [clinicaladvisor.com]

Urine

  • Pyuria

    […] and pyuria. Depending on the underlying disease, nephritis may present with additional symptoms such as rash, arthralgias, and fever in the case of allergic interstitial nephritis. [amboss.com]

    Clin Nephrol 2009;72:331 ) Fever, hematuria, azotemia and eosinophilia Variable skin rash May be associated with inactive cytochrome P450 polymorphisms ( Ren Fail 2009;31:749 ) Urinalysis: suggestive of infection (eosinophils, hematuria, proteinuria, pyuria [pathologyoutlines.com]

    (Leukocyturia) Pyuria should be checked PRIOR to testing for eosinophils May be associated with WBC casts CLINICAL PEARL: Pyuria is COMMON (~80% Methicillin related cases of AIN and > 50% in drugs OTHER than Methicillin) Absence of pyuria does NOT rule [renalandurologynews.com]

    Risk factors In ATIN, active urinary sediment with sterile pyuria Sometimes renal biopsy Usually imaging to exclude other causes Few clinical and routine laboratory findings are specific for tubulointerstitial nephritis. [merckmanuals.com]

    There may be intermittent pyuria. [medical-dictionary.thefreedictionary.com]

Treatment

Corticosteroids are the mainstay of treatment for AIN, but many patients are refractory to or intolerant of treatment or are unable to discontinue therapy without clinical relapse. [cjasn.asnjournals.org]

Treatment is initially directed at the systemic disease or removing the offending agent. Steroid therapy may be indicated in cases of acute interstitial nephritis that do not respond to initial treatment. [cmaj.ca]

Currently there is no good treatment for drug-induced AIN. Prednisone is the standard treatment but is associated with many side-effects when used long-term and at high doses. [clinicaltrials.gov]

Sunitinib is an oral multitargeted inhibitor indicated for the treatment of renal cell carcinoma. This report describes a case of allergic interstitial nephritis possibly related to this agent. [ncbi.nlm.nih.gov]

Treatment Rapid identification and withdrawal of the suspect medicine is the mainstay of treatment 2. [medsafe.govt.nz]

Prognosis

Seite 53 - Etiology, incidence, and prognosis of renal failure following cardiac operations. Results of a prospective analysis of 500 consecutive patients. J. thorac. cardiovasc. Surg. ‎ Seite 84 - Rich MW, Crecelius CA. [books.google.de]

Acute interstitial nephritis generally has a good prognosis. [amboss.com]

In chronic TIN, prognosis depends on the cause and on the ability to recognize and stop the process before irreversible fibrosis occurs. [kidneypathology.com]

In general, the prognosis for drug-induced AIN is good, and at least partial recovery of kidney function is normally observed. Early recognition is crucial because patients can ultimately develop chronic kidney disease. [ncbi.nlm.nih.gov]

NSAIDs) P enicillins and cephalosporins P roton pump inhibitors rifam P in systemic infections mycoplasma autoimmune diseases systemic lupus erythematosus sarcoidosis Pathogenesis type IV hypersensitivity reaction T-cell-mediated attack on tubular cells Prognosis [medbullets.com]

Etiology

[…] definition acute interstitial nephritis (AIN), also known as tubulointerstitial nephritis, is an acute immune-mediated interstitial inflammation of the kidneys Epidemiology demographics male:female ratio is 3:1 in methicillin-induced AIN middle-aged adults Etiology [medbullets.com]

Many etiologies of AIN have been recognized--including allergic/drug-induced, infectious, autoimmune/systemic, and idiopathic forms of disease. The most common etiology of AIN is drug-induced disease, which is thought to underlie 60-70% of cases. [ncbi.nlm.nih.gov]

Codes with this note are Etiology codes and must be followed by a Manifestation code or codes. Code See Section B95-B97, to identify infectious agent. MS-DRG Mapping DRG Group #689-690 - Kidney and urinary tract infections with MCC. [icd.codes]

Although a definite etiologic relation has not been established, the diuretic agents employed may have been responsible for the interstitial nephritis in these cases. [nejm.org]

Seite 53 - Etiology, incidence, and prognosis of renal failure following cardiac operations. Results of a prospective analysis of 500 consecutive patients. J. thorac. cardiovasc. Surg. ‎ Seite 84 - Rich MW, Crecelius CA. [books.google.de]

Epidemiology

Infections in Compromised Hosts 593 Clinical Considerations 601 Approach to Patients With Systemic Infection 612 Epidemiology and Infection Control 621 PULIMONARY AND CRITICAL CARE 629 Respiratory Therapy Techniques and Mechanical 636 Management of Acute [books.google.de]

Introduction Clinical definition acute interstitial nephritis (AIN), also known as tubulointerstitial nephritis, is an acute immune-mediated interstitial inflammation of the kidneys Epidemiology demographics male:female ratio is 3:1 in methicillin-induced [medbullets.com]

Epidemiology [ edit ] Interstitial nephritis is uncommon ( acute kidney injury of unknown cause. [2] While it can occur in patients of all ages, it is more common in elderly patients, perhaps due to increased exposure to drugs and other triggering causes [en.wikipedia.org]

Tubulointerstitial nephritis was identified in nine of 17 biopsies in this study. [9] Balkan endemic nephropathy Epidemiology and natural history clearly implicate environmental factors in the pathophysiology of Balkan endemic nephropathy. [emedicine.medscape.com]

Vijayakumar Drugs & Therapy Perspectives (2018) Tubulointerstitial nephritis and uveitis (TINU) syndrome: a systematic review of its epidemiology, demographics and risk factors Linda O. Okafor, Peter Hewins, Philip I. Murray & Alastair K. [nature.com]

Pathophysiology

This edition has been thoroughly revised by world-renowned contributors to reflect recent developments in renal pathophysiology. [books.google.de]

Allergic interstitial nephritis Crystal-induced acute kidney injury Etiology Antibiotics, NSAIDs, diuretics, allopurinol, PPIs, phenytoin E.g, acyclovir, indinavir, ciprofloxacin, methotrexate Pathophysiology Drugs, particularly antibiotics and NSAIDs [amboss.com]

Tubulointerstitial diseases of the kidney encompass diverse etiologies and pathophysiologic processes, and the patient can present with acute or chronic conditions. [emedicine.medscape.com]

Pathophysiology of 3 phases • Initiation– tubular cells begin to lose concentrating ability. • Oliguric – tubular epithelium lost, so there is reabsorption of most of the glomerular filtrate. • Diuretic – regenerating epithelium can’t yet concentrate, [slideshare.net]

Tubulointerstitial nephropathies: a pathophysiologic approach. West J Med. 1980;132:134–42. PubMed Google Scholar 107. Braden GL, Germain MJ, Fitzgibbons JP. Impaired potassium and magnesium homeostasis in acute interstitial nephritis. [link.springer.com]

Prevention

Can interstitial nephritis be prevented or avoided? In most cases, there is nothing you can do to prevent interstitial nephritis. You can reduce your risk of getting it by avoiding medicines that can cause the condition. [familydoctor.org]

Appropriate Prophylaxis and Other Measures to Prevent Readmission. Avoid re-administration of drug class which led to AIN. **The original authors for this chapter was Dr. David Mintzer. The chapter was revised by Dr. Jacklyn Lee. [clinicaladvisor.com]

Often, the disorder can't be prevented. Avoiding or reducing your use of medicines that can cause this condition can help reduce your risk. If needed, your provider will tell you which medicines to stop or reduce. [medlineplus.gov]

Based on these data, we used corticosteroids at the time of diagnosis to prevent potential progression to irreversible interstitial fibrosis. The result was positive and displayed rapid normalisation of renal function. [revistanefrologia.com]

Kidney Int 35 : 1257 –1270, 1989 ↵ The Tricontinental Mycophenolate Mofetil Renal Transplantation Study Group: A blinded, randomized clinical trial of mycophenolate mofetil for the prevention of acute rejection in cadaveric renal transplantation. [cjasn.asnjournals.org]

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