Ayurveda has blessed us with multiple, effective and harmless treatments and medications. Viddha Karma is one of the eight Shastrakarma as defined in Sushrut Samhita.
Viddha Karma also known as Vedhan; is treatment of puncturing or piercing certain points that reduces pain. It acts as pain reliever by releasing Endorphin that helps to reduce pain in body. This is how it can be explained in contemporary Medical language.