Can appendicitis pain last months?

Rare: Very unusual. Usually with appendicitis you have around 24 hours from the onset of pain until the appendix ruptures. Once it ruptures, the pain is so severe it gets evaluated and fixed. There is chronic appendicitis, but it is less understood. Mild pain that comes and goes and sometimes it does last months or even years. This is not usually seen prior to surgery. Usually seen months later.

Usually not.: "chronic" appendicitis may actually exist, but long-standing pains are usually due to something else. Can be ovarian cyst, pelvic inflammatory disease, urinary tract or kidney infection, stone, and a myriad of other things. If you've seen your doctor for tests, these things have probably been ruled out. Appendicitis usually is relatively acute.