A concept or knowledge has to be introduced from the outside, which may hurt, but will ultimately make us better from the inside.
2- The ability to have some penetrating insights about our own state can help us to cope with everyday- life. It will depend if the needles are being used by us or on us.
3- The needle can suggest masculine sexuality, but also the type of penetrating insight which changes our view of life.
What Does Needle Mean In Dream?