What are the clinical features of drug-induced acute interstitial nephritis?

What are the clinical features of drug-induced acute interstitial nephritis?

• A. Polyuria and hematuria
• B. Polyarthralgia, fever, eosinophilia, elevated creatinine, and eosinophiluria
• C. Hypertension and proteinuria
• D. Edema and electrolyte imbalance

Answer: (B)

Drug-induced acute interstitial nephritis is characterized by a distinctive set of clinical features that primarily arise as a hypersensitivity reaction in the kidneys. The correct answer highlights the most common manifestations associated with this condition. The presence of polyarthralgia, fever, and eosinophilia signifies a systemic hypersensitivity response often triggered by certain medications. Elevated creatinine indicates impaired renal function, and eosinophiluria reflects the infiltration of eosinophils into the urine, which is a hallmark of this type of nephritis. This constellation of symptoms showcases the immune-mediated nature of acute interstitial nephritis, which typically occurs after exposure to specific drugs such as antibiotics, non-steroidal anti-inflammatory drugs (NSAIDs), or diuretics. In contrast, while the other options list various renal-related symptoms, they do not encompass the classic triad of symptoms — fever, rash, and eosinophilia — that are especially prominent in drug-induced acute interstitial nephritis. For instance, polyuria and hematuria can occur in other types of renal conditions, but they are not specifically known for this condition. Hypertension and proteinuria are more characteristic of chronic conditions affecting renal function versus the acute presentation of interstitial nephritis. Similarly,

Drug-induced acute interstitial nephritis is characterized by a distinctive set of clinical features that primarily arise as a hypersensitivity reaction in the kidneys. The correct answer highlights the most common manifestations associated with this condition.

The presence of polyarthralgia, fever, and eosinophilia signifies a systemic hypersensitivity response often triggered by certain medications. Elevated creatinine indicates impaired renal function, and eosinophiluria reflects the infiltration of eosinophils into the urine, which is a hallmark of this type of nephritis. This constellation of symptoms showcases the immune-mediated nature of acute interstitial nephritis, which typically occurs after exposure to specific drugs such as antibiotics, non-steroidal anti-inflammatory drugs (NSAIDs), or diuretics.

In contrast, while the other options list various renal-related symptoms, they do not encompass the classic triad of symptoms — fever, rash, and eosinophilia — that are especially prominent in drug-induced acute interstitial nephritis. For instance, polyuria and hematuria can occur in other types of renal conditions, but they are not specifically known for this condition. Hypertension and proteinuria are more characteristic of chronic conditions affecting renal function versus the acute presentation of interstitial nephritis. Similarly,