Bruised kidney symptoms may be the result of physical injury, exposure to toxins or infection, potentially leading to an array of complications if left untreated. Bruised kidneys commonly present symptoms in the abdomen and urinary tract.
A bruised kidney may be asymptomatic if the healthy kidney resumes normal function, or may result in chronic symptoms of weight loss, fatigue, constipation and irritability.
Severe kidney bruising due to inflammation or injury may cause abdominal and back pain, bloody or cloudy urine, nausea, vomiting, painful urination and fever, signifying an emergency.
Sharp and sudden side pangs within the lower abdomen may be accompanied by painful or frequent urination, chills and fever, indicating a kidney infection, stone or bruised kidney, requiring treatment.
Signs and symptoms of kidney bruising necessitate medical attention, as kidney function is needed for filtering fluids and wastes in prevention of toxicity and vital organ damage.
Doctors conduct exams looking for signs of hemorrhaging, tenderness or shock, with blood tests, imaging tests, abdominal and kidney scans and ultrasounds providing further assistance in diagnosing kidney bruising.