One of the most common causes of toe and foot numbness is direct compression of the foot from shoes, notes MedicineNet. Some other causes include nerve damage, poor circulation brought on by diabetes and irritation of the nerves in the lower back.
Other causes for foot numbness include the abuse of alcohol, sciatica, shingles and frostbite, notes Healthline. Numbness in the foot and toes can also be a sign of multiple sclerosis, Guillain-Barre syndrome or Charcot-Marie-Tooth disease. High-impact exercises and sports that require a lot of running can cause numbness in the toes and feet. If just one foot becomes numb, it could be a sign of a stroke or seizure.