I'm not that familiar with the side effects of adderall. One of the experts on our ADHD site – ADHDCentral.com – should be able to tell you how much, if any, of your arm/hand symptoms may be related to the medication.
The fact that your arm feels asleep and your hand is always cold sounds like you may not be getting good blood circulation to that arm. You really need to talk to your doctor about these symptoms, including the electric-like pain to find out what is causing it. I hope you'll talk to your parents about making an appointment with your doctor soon.
We hope you find this general health information helpful. Please note however, that this Q&A is meant to support not replace the professional medical advice you receive from your doctor. No information in the Answers above is intended to diagnose or treat any condition. The views expressed in the Answers above belong to the individuals who posted them and do not necessarily reflect the views of Remedy Health Media. Remedy Health Media does not review or edit content posted by our community members, but reserves the right to remove any material it deems inappropriate.