http://www.markrobertshypnosis.co.uk/overcomethefearofneedles.php Most people have a slight fear of needles. This is a fairly normal reaction.
However, people who are needle phobic tend to have a reaction which far outweighs the small amount of pain involved in a routine injection.
The mere sight of a needle can cause panic and distress and even the sight of a doctor or hospital can start to bring about a panic attack.
If you are needle phobic, the chances are it began with an unpleasant experience in your past, usually in early childhood. The mind tends to generalise in order to protect you, so you get the reaction that your first experience with a needle was painful, therefore all needles are painful! This, of course, is untrue, but it doesn't prevent the panic attacks you suffer as a result of your phobia!