Final answer:
Cystitis is an infection of the urinary bladder caused by bacteria or fungi. Symptoms include pain with urination, frequent urination, blood in the urine, and bladder pain. Treatment involves antibiotics.
Step-by-step explanation:
Cystitis refers to an infection of the urinary bladder. It is a common type of urinary tract infection caused by bacteria (typically Escherichia coli) or rarely by fungi. Symptoms of cystitis include pain with urination, frequent urination, blood in the urine, and bladder pain. Bladder infections are treated mainly with antibiotics.