DIPHENOXYLATE HYDROCHLORIDE AND ATROPINE SULFATE IS NOT RECOMMENDED FOR CHILDREN UNDER 2 YEARS OF AGE. Diphenoxylate hydrochloride and atropine sulfate should be used with special caution in young children because of the greater variability of response in this age group. See WARNINGS and DOSAGE AND ADMINISTRATION.
Similarly, nerve damage in the arm can cause numbness. This may include damage to the nerves in the arms, shoulder, neck, or spine. This could be the result of blood circulation being interrupted or a nerve becoming compressed.
Sleeping on Your Arm. Sometimes the cause of a tingling hand or arm is simply the result of sleeping on your arm or hand for a long period of time. The pressure of your body's weight can disrupt nerve pathways and circulation to that particular part of the body. The brain then isn't sure how to respond.