Introductions:
BL-24, a comprehensive guide on Nephritis, Cystitis, and Albuminuria."

Symptoms:

- Nephritis:
  - Blood in urine
  - Swelling in the legs, ankles, or around the eyes
  - High blood pressure
  - Fatigue and weakness
  - Reduced urine output

- Cystitis:
  - Frequent and urgent need to urinate
  - Burning sensation during urination
  - Cloudy or bloody urine
  - Pain or discomfort in the lower abdomen or pelvic region

- Albuminuria:
  - Presence of protein (albumin) in the urine
  - Foamy or frothy appearance of urine
  - Swelling in the ankles, feet, and hands due to fluid retention
  - Fatigue and muscle weakness