For the past several months, a 24-year-old male has experienced fatigue, puffiness, and overall weakness. One day he noticed his urine had a red to brown discoloration, and that his urine volume was...

What disorder is affecting this patient and what situation(s) predispose an individual to this disorder?

Extracted text: For the past several months, a 24-year-old male has experienced fatigue, puffiness, and overall weakness. One day he noticed his urine had a red to brown discoloration, and that his urine volume was minimal. He went to the emergency room, where urinalysis, blood work, and other tests were done to obtain the following data: Urinalysis results Hematology results Appearance Red to brown Serum sodium 125 mEq/L Specific gravity 1.025 Serum potassium 6 mEq/L Blood Positive Serum creatinine 2.6 mg/dL Glucose Negative BUN 24.0 mg/dL Protein Mild pH (arterial) 7.32 Hematocrit 25% Renal function tests GFR (glom. filt. rate) 40 mL/min RBF (renal blood flow) 280 mL/min