Tingling in the feet may occur when a person sits in one position for a long time or crosses his feet, according to WebMD. In some situations, tingling in the feet is a sign of nerve damage, also referred to as peripheral neuropathy. Causes of peripheral neuropathy include diabetes, systemic diseases, nerve entrapment syndromes, vitamin deficiencies and toxins.
Diabetes accounts for about 30 percent of cases of peripheral neuropathy, according to WebMD. The tingling sensation develops in both feet and goes up the legs. Most diabetics have mild to severe forms of nerve damage, and tingling in the feet is often the first symptom of diabetes.
Systemic diseases such as liver disease, kidney disease and connective tissue disorders may cause tingling in the feet, notes WebMD. Benign tumors and cancers may also impinge on nerves and cause peripheral neuropathy.
Nerve entrapment syndromes that cause tingling in the feet include carpal tunnel syndrome and radial nerve palsy, reports WebMD. Peripheral neuropathy may be a sign of vitamin B-12, B-1, E or B-6 deficiencies. Vitamin B-12 deficiency causes pernicious anemia, which leads to peripheral neuropathy. However, too much B-6 may also cause tingling in feet.
Other causes of tingling in feet include alcohol, toxins such as lead and mercury, chemotherapy medications, autoimmune diseases such as lupus, and nerve compression due to herniated discs, states WebMD.