Differential Diagnosis for Blood after Urinating
Single Most Likely Diagnosis
- Urinary Tract Infection (UTI): This is the most common cause of hematuria (blood in urine), especially in women. Bacteria in the urinary tract can cause inflammation and bleeding.
Other Likely Diagnoses
- Kidney Stones: Stones in the kidney or ureter can cause bleeding due to irritation and obstruction of the urinary tract.
- Benign Prostatic Hyperplasia (BPH): Enlargement of the prostate gland can cause bleeding due to urethral irritation or obstruction.
- Bladder Cancer: Although less common, bladder cancer can cause painless hematuria, especially in older adults with a history of smoking.
Do Not Miss Diagnoses
- Trauma: Any form of trauma to the urinary tract, such as a car accident or a fall, can cause bleeding and should not be missed.
- Sickle Cell Disease: Patients with sickle cell disease are at risk of developing sickle cell nephropathy, which can cause hematuria.
- Bleeding Disorders: Conditions like hemophilia or von Willebrand disease can increase the risk of bleeding in the urinary tract.
Rare Diagnoses
- Goodpasture Syndrome: A rare autoimmune disease that can cause bleeding in the lungs and kidneys.
- Alport Syndrome: A genetic disorder that affects the type IV collagen in the kidneys, leading to hematuria and kidney failure.
- Arteriovenous Malformation (AVM): A rare condition where there is an abnormal connection between arteries and veins, which can cause bleeding in the urinary tract.
- Schistosomiasis: A parasitic infection that can cause bleeding in the urinary tract, more common in tropical regions.