The appendix is a tiny pouch from your large intestine, and it's likely to be a remnant from our very distant ancestors – it's not known to serve any function to us now. It can cause problems if it becomes inflamed and infected, in a condition called appendicitis. This can make us very unwell unless treated. It can happen at any age but is most common in children above 5 and adolescents.
Appendicitis usually starts in the middle of the tummy, around the belly button, and pain may initially be mild and come and go. Over several hours, the pain becomes more pronounced and specific to the lower right tummy (the right iliac fossa). It becomes sharper and more intense. It’s felt worse with movement and often people need to stay still to reduce pain.
You may also get fever, nausea, vomiting, diarrhoea and constipation. If you have tummy pain which is worsening, you should seek urgent medical attention.
This is largely unknown. It’s thought that it may be due to a small piece of poo from the intestine getting trapped in the opening of the appendix, or due to a blockage from a swollen lymph node around the opening, which can be caused by infections.
A common and successful surgery is an appendicectomy, where the appendix is removed. This usually happens via keyhole surgery, but if there are complications, like a burst appendix or infected appendix causing sepsis, open surgery may be recommended.
We don’t need our appendix, so you can live without it perfectly well and there are no long-term repercussions of surgery.
Occasionally an appendicitis may be mild, and fluids and antibiotics are given, and it’s closely monitored, to see if the inflammation can go down without the need for surgery.
A serious and life-threatening complication is a burst appendix which can lead to bacteria leaking throughout the abdomen, called peritonitis. This can cause other organs to fail and requires immediate open surgery. The symptoms include severe abdominal pain and swelling, difficulty breathing and fast heart rate, vomiting and fever. This needs immediate medical attention.
If you have mild abdominal pain that's gradually worsening and moving to the right side of your tummy, it's best not to ignore this. The "watchful waiting" approach described relies on having the correct diagnosis, the right support in terms of fluids and antibiotics, and a medical team monitoring your symptoms and bloods. It's not recommended you do this yourself at home.
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