Answer: There are a lot of reasons, but the most outstanding ones are
STIs and STDs, including gonorrhea, human papillomavirus (HPV), syphilis and human immunodeficiency virus (HIV).
Other viral infections, including adenovirus.
Interstitial cystitis (painful bladder syndrome).
Pneumonia.
Tuberculosis.
Sepsis.
Kidney stones.
Transvaginal surgical mesh.
Step-by-step explanation: