Cystitis is inflammation of the bladder, usually caused by a bacterial infection. Cystitis is not sexually transmitted but sexual activity may trigger cystitis in some women. 

Symptoms

The symptoms of cystitis may include:

• A burning feeling when passing urine
• Increased frequency of urination and urgency to pass urine
• Passing small amounts of urine 
• Strong smelling urine
• Lower abdominal pain.

Diagnosis

Diagnosis is made by testing the urine for bacteria.

Treatment

Cystitis is treated with a course of antibiotics.