When should I go to the ER for appendicitis?

The Timing Decision: Sooner Is Safer

Appendicitis is one condition where waiting carries real risk. The appendix can rupture within about 48 to 72 hours of the first symptoms, and there is no reliable way to tell from home whether you are early or late in that window. The pain also classically worsens over hours rather than easing. Because of this, the right move is to be evaluated as soon as appendicitis is a genuine possibility — not to wait overnight to “see if it passes.”

Go to the ER Now If You Have

• Worsening pain in the lower right abdomen, especially if it started near your navel and migrated there
• Abdominal pain plus fever, nausea, vomiting, or loss of appetite
• Pain that intensifies when you cough, walk, or move
• Pain severe enough that you cannot get comfortable or find a position that helps

An ER — not urgent care — is the right destination because confirming appendicitis requires blood work and imaging (CT or ultrasound), and treatment is time-sensitive.

Call 911 Instead of Driving If

You develop sudden, severe pain across the whole belly, a rigid or board-like abdomen, a high fever with chills, or you feel faint. These can mean the appendix has ruptured, which is a life-threatening emergency.

When Telemedicine, Urgent Care, or Your PCP Is Reasonable Instead

Not every belly pain needs the ER. A telemedicine visit or your primary care doctor is a sensible first step when your pain is:

• Mild and stable, not steadily worsening
• Not localizing to the lower right abdomen
• Without fever, repeated vomiting, or loss of appetite
• Clearly tied to a known cause such as gas, indigestion, a stomach bug, or menstrual cramps, and improving

A clinician can help sort out these common causes. But the moment mild pain shifts to the lower right, sharpens, or is joined by fever, nausea, or vomiting, escalate to the ER. When in doubt — particularly for children, pregnant patients, or older adults — it is safer to be seen in person.

Why an ER Visit Resolves the Uncertainty

At Bellaire ER, a board-certified emergency physician examines you and confirms or rules out appendicitis in a single visit using on-site blood work and CT or ultrasound. If it is appendicitis, we begin treatment — IV fluids, pain control, and antibiotics — and coordinate a prompt transfer to a hospital for surgery, since the appendectomy itself is performed there. If it is not, we identify the real cause and give you a clear plan before you leave.

For a complete guide, see our appendicitis page. Bellaire ER is open 24/7 at 5302 Bellaire Blvd — walk in or call (713) 660-0001.