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Urine is the way your body expels excess water, salts, and other compounds. The kidneys are responsible for regulating fluid and electrolyte balances in the body. When they sense excess fluids and compounds, they release them.
Top of the page Check Your Symptoms. Urinary problems and injuries are a concern in children. A young child may not be able to tell you about his or her symptoms, which can make it hard to decide what your child needs.
Back to Cystitis. It can be difficult to tell whether a child has cystitis, because the symptoms can be vague and young children cannot easily communicate how they feel. If you're a woman who has had cystitis before, or you have mild symptoms that have lasted less than 3 days, you do not necessarily need to see a GP.
A urinary tract infection or UTI is an infection in the kidney, ureters, bladder, or urethra, usually caused by bacteria. The urinary tract includes your kidneys, ureters, bladder, and urethra. The kidneys filter your blood, removing extra water and waste, and this process produces urine.
Cystitis sis-TIE-tis is the medical term for inflammation of the bladder. Most of the time, the inflammation is caused by a bacterial infection, and it's called a urinary tract infection UTI. A bladder infection can be painful and annoying, and it can become a serious health problem if the infection spreads to your kidneys.