What causes ‘pins and needles’?

This question was asked by Hannah from West Sussex, UK.¬† The medical name for the sensation we call pins and…

How do painkillers work?

When you injure yourself you feel pain. Imagine you’ve touched something hot and burned your hand – the damaged cells…

How does local anaesthetic work?

This question was asked by Albatross class at Swiss Gardens Primary School, Shoreham, UK. ‘Anaesthetic’ (pronounced¬†ann-ass-thet-ik) comes from a Greek…