Symptoms or signs may include:
- Frequent, painful urination
- Back, side (under the ribs), and groin pain
- Chills and high fever
- Nausea and vomiting
Very young children (younger than 2 years old) may only have a high fever. They may not feel pain or have problems urinating. Older people, also, may not show typical signs. Instead, they may show signs of confusion, muddled speech, or visions.
This infection can be life threatening. It is important to seek medical care quickly if you think you have a kidney infection.