Tingling in hands , feet or both is a common and bothersome symptom. It could result from Pressure on nerves when your arm is crooked under the head as you fall asleep. Traumatic injuries or Repetitive stress injuries, Bacterial or Viral infections, toxic exposures and systemic diseases like Diabetes can cause this. Diabetes is one of the most common causes for Peripheral Neuropathy Neve entrapment Syndromes Kidney diseases, liver disorders, Vascular disoders, Alcoholism Vitamin Deficiencies are other causes Vitamin Supplements Supervised exercise program Eating a balanced diet are necessary