Tingling in the Extremities: Causes and Diagnostic Approach

Diabetic Neuropathy

Diabetic peripheral neuropathy is the most common cause of tingling in the extremities, particularly in patients with type 2 diabetes, according to the American Diabetes Association 1, 2
Symptoms typically start distally in the feet and progress proximally in a "stocking-glove" distribution, affecting patients with diabetes 3, 4
Small fiber involvement causes pain, burning sensations, and tingling (dysesthesias) in patients with diabetic neuropathy 1, 3
Large fiber involvement may cause numbness and loss of protective sensation in patients with diabetes 1, 2

Erythromelalgia causes episodic burning pain with redness and warmth of the extremities, often triggered by physical activity and warm temperatures, as reported by the Mayo Clinic 8, 5
Myeloproliferative disorders (essential thrombocythemia, polycythemia rubra vera) may cause erythromelalgia with tingling, according to the Mayo Clinic 8

Neurotoxic medications (e.g., chemotherapy agents) can cause peripheral neuropathy, as stated by the American Diabetes Association 2
Heavy metal poisoning can lead to tingling sensations, according to the American Diabetes Association 3, 4
Alcohol abuse can cause peripheral neuropathy with tingling, as reported by the American Diabetes Association 3

Assessment should include evaluation of small-fiber function: pinprick and temperature sensation, and large-fiber function: vibration perception using a 128-Hz tuning fork and 10-g monofilament testing, as recommended by the American Diabetes Association 1, 2, 3
In patients with severe or atypical neuropathy, consider causes other than diabetes, including neurotoxic medications, heavy metal poisoning, and vasculitis, according to the American Diabetes Association 1, 2, 3, 7

Failing to consider non-diabetic causes of neuropathy in patients with diabetes, as warned by the American Diabetes Association 1, 2
Not recognizing that up to 50% of diabetic peripheral neuropathy may be asymptomatic, leading to delayed diagnosis, as reported by the American Diabetes Association 1
Excessive cooling strategies (ice water immersion, powerful fans) used by patients to relieve symptoms can cause tissue damage and worsen the condition, as cautioned by the Mayo Clinic 8, 5