What should you know about constant headache with UTI?

A urinary infection can cause illness, fever, chills, reduced appetite, and lower fluid intake; these can contribute to headache. [Dehydration](/conditions/dehydration/) may add thirst, dizziness, dry mouth, or darker urine. Headache is not a defining feature of every urinary infection, so a constant headache may also have an unrelated cause such as tension, migraine, or a respiratory illness. Burning urine or urinary frequency alone cannot show how serious the infection is.

Contact a clinician if you have urinary symptoms with a persistent headache, fever, or feeling generally unwell. Drink normally if you can and follow prescribed treatment exactly; do not use leftover antibiotics or share them. Record temperature, urinary symptoms, fluid intake, medicines, back or side pain, and when the headache began. Ask whether a urine test or other assessment is needed.

Seek urgent care for fever with shaking chills, pain in the side or back, repeated vomiting, fainting, confusion, marked weakness, inability to keep fluids down, or very little urine. Emergency help is needed for a sudden severe headache, seizure, new weakness, speech difficulty, vision loss, or a stiff neck with fever. Pregnancy, childhood, older age, or a weakened immune system lowers the threshold for prompt assessment.

Ask whether your urinary symptoms fit a bladder infection or possible kidney involvement, whether testing is required, and how to manage fluids and pain safely. Mention antibiotics already taken, allergies, pregnancy, fever, vomiting, and back pain. If you also have cough, sore throat, or congestion, explain those symptoms because [COVID-19](/conditions/covid-19/) or [Common Cold](/conditions/common-cold/) may be separate considerations.