Numbness and tingling

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Central nervous system

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Your doctor may also ask you questions to determine your risk for stroke, thyroid disease, or diabetes, as well as questions about your work habits and medications.

Blood tests may include:

• Complete blood count ( CBC)
• Electrolyte level (measurement of body chemicals and minerals)
• Thyroid function tests
• Measurement of vitamin levels
• Heavy metal or toxicology screening

Imaging tests may include:

• CT scan of the head
• CT scan of the spine
• MRI of the head
• MRI of the spine
• Angiogram (A test that uses x-rays and a special dye to see inside the blood vessels)
• CT angiogram
• X-ray of the affected area
• Ultrasound of neck vessels to determine your risk for TIA or stroke
• Vascular ultrasound

Other tests that may be done include:

• Electromyography and nerve conduction studies to measure how your muscles respond to nerve stimulation
• Lumbar puncture (spinal tap) to rule out central nervous system disorders
• Cold stimulation test may be done to check for Raynaud's phenomenon

Review Date: 04/21/2009
Reviewed By: Jacob L. Heller, MD, Emergency Medicine, Virginia Mason Medical Center, Seattle, Washington, Clinic. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org).

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