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: 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. Nerve injuries
Injuries that affect the nerves in your left arm can interrupt messages from your brain and cause numbness. For instance, brachial plexus neuropathy is a type of nerve injury characterized by damage to the nerves that run down the arms from the spinal cord. Brachial plexus neuropathy can cause pain in the shoulders and arms, as well as numbness and limited movement. Contact sports, auto accidents, and other factors can result in this kind of nerve injury. Hypothyroidism
An underactive thyroid—a condition also known as hypothyroidism—can cause a number of symptoms, including numbness, tingling, and a painful “pins-and-needles” sensation that can affect the arms.