Fever is not an early clinical manifestation in patients with uremia; therefore, patients in the early stages of uremia do not exhibit fever. Typically, in the early stages of uremia, patients only show symptoms such as fatigue, poor spirit, lack of appetite, and easy fatigue, and may experience edema, such as swelling of the eyes and facial area after waking up in the morning, making it difficult for patients to open their eyes, and swelling of the lower limbs.

In addition, patients also exhibit high blood pressure, such as increased systolic and diastolic pressures, which are difficult to control. Patients often exhibit clinical symptoms such as dizziness and headache. Patients also experience a significant increase in the frequency of urination at night and an increase in urine output, which are all early manifestations of uremia.