Big toe numbness common causes, as follows: 1, peripheral neuritis: mostly due to diabetes and other causes of peripheral neuropathy, often appear numbness of the fingers, toes, the numbness as wearing gloves, socks feel. 2, toe nerve injury: such as trauma, heavy objects smashed or cut can cause damage to the toe nerve, manifested as numbness of the skin of the innervation area. 3, other Causes: Consider local skin allergies or local exposure to toxic substances, such as mosquito bites or chemical contact, can cause skin redness, swelling, itching, sometimes accompanied by abnormal skin sensations, including numbness of the toes.