What should you know if your urine seems cloudy?

Urine may look cloudy when it is concentrated, when minerals form crystals, or when mucus, cells, or discharge enter the sample. If cloudiness appears briefly and improves after drinking fluids, dehydration may be contributing. Cloudiness with burning, urgency, frequent small voids, lower abdominal discomfort, or an unusual smell can occur with a urinary tract infection.

Fever, chills, nausea, or pain in the side or back raises concern for infection involving the kidney. Cloudiness alone cannot identify its cause, and a visual change does not tell you how severe a problem is. See the [Cloudy Urine](/symptoms/cloudy-urine/) symptom guide for related information.

Notice when the change began, whether it persists, and whether pain, fever, blood, or altered urination occurs. Drink fluids according to your usual medical advice; people with fluid restrictions should follow their clinician’s plan. Avoid using leftover antibiotics, because the medicine may be unsuitable and can obscure later testing.

A clinician may ask for a clean-catch urine sample and decide whether a dipstick, microscopy, or culture is appropriate. Mention pregnancy, recent sexual activity, vaginal or penile discharge, medicines, and any history of urinary problems, since these details change the assessment.

Book a review if cloudy urine keeps returning, lasts beyond a brief change, or comes with burning, urgency, blood, or pelvic pain. Seek urgent medical care for fever with side or back pain, vomiting, shaking chills, confusion, or marked weakness. These warning symptoms can indicate a kidney infection that needs prompt treatment.

Ask whether you need a urine test or culture, which symptoms point toward a urinary tract infection, and how to collect the sample. Ask what changes should prompt urgent review and whether another explanation, such as dehydration, fits your situation.