Title: What causes numbness in the left arm and hand? - Blog | Everlywell: Home Health Testing Made Easy
Headings: What causes numbness in the left arm and hand?
What causes numbness in the left arm and hand?
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What causes tingling in the left arm?
Inadequate blood flow
Nerve injuries
Hypothyroidism
Herniated disc
Vitamin B12 deficiency
Fractures
Carpal tunnel syndrome
Cubital tunnel syndrome
Diabetic neuropathy
Multiple sclerosis
Stroke
What to do if you experience numbness or tingling in the left arm

Content: To give you technically accurate, evidence-based information, content published on the Everlywell blog is reviewed by credentialed professionals with expertise in medical and bioscience fields. Skip to: What causes tingling in the left arm? | Inadequate blood flow | Nerve injuries | Hypothyroidism | Herniated disc | Vitamin B12 deficiency | Fractures | Carpal tunnel syndrome | Cubital tunnel syndrome | Diabetic neuropathy | Multiple sclerosis | Stroke | What to do if you experience numbness or tingling in the left arm
Wondering what could be causing the numbness or tingling you’ve been feeling in your left arm? Numbness and tingling in the left arm can be caused by something as simple as sleeping on your arm, but it may also be a sign of a serious health condition—so keep reading to learn more about the possible causes, from hypothyroidism and vitamin deficiencies to carpal tunnel syndrome and more. What causes tingling in the left arm? Several possible factors can cause numbness or a tingling sensation in the left arm, including the following. Inadequate blood flow
Inadequate blood flow in the body can cause numbness and tingling in both your left and right arms. Restricted blood flow to the arms can result from injuries or from underlying health conditions such as high blood pressure, diabetes, or kidney failure. If inadequate blood flow is causing tingling in your left arm, you may also experience pain, swelling, and cold hands and fingers.