When acute nephritis recurs, patients may experience a series of symptoms similar to those at the onset of the disease. Patients may present with hematuria, including visible hematuria in some cases. Due to the presence of a significant amount of protein in the urine, patients may develop edema in parts like the lower limbs and eyelids, and in severe cases, edema can become generalized. The presence of protein in urine also leads to increased urine foam. Some patients may experience acute renal failure, a dramatic decrease in urine output, and gastrointestinal reactions such as nausea and vomiting. Patients may also develop hypertension and heart failure, among other conditions.