![]() This should not be painful, but you may feel some pressure. Insert a thin needle through the skin, between 2 bones in the lower part of your spine.Children may also be given medicine to help them relax and keep still. Clean your skin and numb the area with local anaesthetic (you'll be awake during the procedure).You normally lie on your side, with your legs pulled up and your chin tucked in you'll usually need to undress and change into a hospital gown before the procedure – you might also want to use the toilet.you can eat, drink and take medicine as normal.let the hospital know if you're taking blood-thinning medicine (anticoagulants) – such as warfarin.you may have a CT scan or MRI scan – to make sure you need the lumbar puncture and it's safe to have one.Your doctor or nurse should explain what's going to happen and why you need a lumbar puncture. remove some fluid to reduce pressure in the skull or spine.inject a spinal anaesthetic – to numb the lower part of your body before an operation.inject medicine – such as painkillers, antibiotics or chemotherapy.take a sample of fluid from your spinal cord (cerebrospinal fluid) or measure the fluid's pressure – to help diagnose a condition.It's carried out in hospital by a doctor or specialist nurse. It should not be painful, but you may have a headache and some back pain for a few days. A lumbar puncture is where a thin needle is inserted between the bones in your lower spine.
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