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Epidurals are usually safe, but as with all medical treatments, side effects and complications can sometimes happen.
For more on side effects of epidurals in labour, read about pain relief in labour.Â
It's normal for your blood pressure to fall a little when you have an epidural. Sometimes this can make you feel sick.
Your blood pressure will be closely monitored. If necessary, fluids and medicine can be given through a drip to keep your blood pressure normal.
After having an epidural, you may not be able to feel when your bladder is full because the epidural affects the surrounding nerves.
A catheter may be inserted into your bladder to allow urine to drain away. Your bladder control will return to normal when the epidural wears off.
This can be a side effect of the pain relief medicines that may be used in your epidural.
Medicine can be given to help the itching, or the medicine in the epidural can be changed.
Feeling sick (nausea) is less common with epidural medicines than with other pain relief medicines such as morphine and other opiates.
It can be treated with anti-sickness medicines, or by raising your blood pressure if it's low.
The epidural may not block all your pain. You may be offered an extra, or alternative, pain relief method.
A severe headache can happen if the bag of fluid that surrounds your spine is accidentally punctured. You may need specific treatment for the headache.
A procedure known as a blood patch may be used to seal the puncture. It involves taking a small sample of your blood and injecting it into the puncture.
When the blood thickens (clots), the hole will be sealed and your headache will stop.
Not all headaches from an epidural require a blood patch. Your anaesthetist will discuss your options with you.
Occasionally, some medicines used in an epidural can cause slow breathing or drowsiness.
You will be monitored closely to look for this, and it can be treated easily.
The needle or epidural tube can damage nerves, but this is uncommon. Nerve damage can cause loss of feeling or movement in parts of your lower body.
The most common symptom is a small, numb area with normal movement and strength. This usually gets better after a few days or weeks, but can sometimes take months.
An infection can sometimes happen around the skin next to the epidural tube.
It's rare for the infection to spread. Antibiotics may be necessary or, rarely, emergency surgery.
In rare cases, an epidural can lead to permanent loss of feeling or movement in, for example, 1 or both legs.
The causes are:
These are rare events, and anaesthetists have extensive training to reduce the chances of these complications.
Nerve damage can also happen for other reasons during surgery, which are unrelated to the epidural.
There are other possible complications of an epidural, but these are very rare.
Before deciding to have an epidural, you should discuss the procedure with your anaesthetist.
They can provide further information and advice on the risks of developing complications.
