Question: What is (are) IgA Nephropathy ?
Answer: IgA nephropathy, also known as Bergers disease, is a kidney disease that occurs when IgA deposits build up in the kidneys, causing inflammation that damages kidney tissues. IgA is an antibodya protein made by the immune system to protect the body from foreign substances such as bacteria or viruses. Most people with IgA nephropathy receive care from a nephrologist, a doctor who specializes in treating people with kidney disease.
Source: NIDDK

Question: What are the symptoms of IgA Nephropathy ?
Answer: In its early stages, IgA nephropathy may have no symptoms; it can be silent for years or even decades. Once symptoms appear, the most common one is hematuria, or blood in the urine. Hematuria can be a sign of damaged glomeruli. Blood in the urine may appear during or soon after a cold, sore throat, or other respiratory infection. The amount of blood may be - visible with the naked eye. The urine may turn pink or the color of tea or cola. Sometimes a person may have dark or bloody urine. - so small that it can only be detected using special medical tests. Another symptom of IgA nephropathy is albuminuriawhen a persons urine contains an increased amount of albumin, a protein typically found in the blood, or large amounts of protein in the urine. Albumin is the main protein in the blood. Healthy kidneys keep most proteins in the blood from leaking into the urine. However, when the glomeruli are damaged, large amounts of protein leak out of the blood into the urine. When albumin leaks into the urine, the blood loses its capacity to absorb extra fluid from the body. Too much fluid in the body may cause edema, or swelling, usually in the legs, feet, or ankles and less often in the hands or face. Foamy urine is another sign of albuminuria. Some people with IgA nephropathy have both hematuria and albuminuria. After 10 to 20 years with IgA nephropathy, about 20 to 40 percent of adults develop end-stage kidney disease.5 Signs and symptoms of end-stage kidney disease may include - high blood pressure - little or no urination - edema - feeling tired - drowsiness - generalized itching or numbness - dry skin - headaches - weight loss - appetite loss - nausea - vomiting - sleep problems - trouble concentrating - darkened skin - muscle cramps
Source: NIDDK