A randomised double blind placebo controlled trial to determine whether topical pre-treatment of injection sites can reduce the pain associated with needles

This study is testing whether a topical numbing pad applied to the skin for 10 minutes before a needle injection can reduce or eliminate the pain of the injection compared to a pad with no active ingredient (placebo). Needle pain and needle anxiety are very common, especially in children. This device contains lidocaine, a commonly used local anaesthetic. Participants will receive either the active numbing pad or a placebo pad before a standard needle stick. You may be eligible if: - You are between 18 and 65 years old - You are male or female - You do not have a known allergy to lidocaine You may NOT be eligible if: - You are under 18 years old - You have an intellectual or mental impairment - You are pregnant - You are highly dependent on medical care - You have taken pain medication (analgesics) within the last 12 hours - You have a known allergy to lidocaine Talk to your doctor about whether this trial might be right for you.