Hand Numbness
What Is Hand Numbness?
Hand numbness, also called paresthesia, is an abnormal condition marked by reduced or altered sensation in the hand due to compression, injury, or irritation of a nerve or its branches. It may affect one or both hands.
Causes of Hand Numbness
The damage or irritation to the nerves of the hands leading to hand numbness may be caused by:
- A herniated disc in the cervical spine
- Carpal tunnel syndrome
- Stroke
- Hand injury
- Cervical spondylosis
- Ulnar nerve entrapment
- Side effects of chemotherapy
- Diabetes
- Incorrect sleeping posture
- Poor blood circulation
- Vasculitis
- Vitamin B12 deficiency
- Infection
- Autoimmune disorders
Symptoms of Hand Numbness
Some of the common symptoms of hand numbness include:
- Burning sensation
- Neck pain
- Muscle spasms
- Pain in the wrist, arm, and fingers
- Twitching
- Tingling sensation
- Sensitivity to touch
- Loss of strength
Diagnosis of Hand Numbness
Your doctor will review your symptoms and medical history and perform a physical examination. Based on the findings, the following diagnostic tests may be recommended:
- X-rays: Imaging tests that use electromagnetic radiation to visualize bones and identify fractures.
- MRI scan: A diagnostic study that uses magnetic fields and radio waves to detect abnormalities in soft tissues.
- Ultrasound: An imaging technique that uses high-frequency sound waves to create real-time images of internal tissues.
- Blood tests: Laboratory tests used to detect signs of infection, inflammation, or underlying disease.
- Electromyography (EMG): A test that measures the electrical activity of muscles to evaluate nerve and muscle function.
- Lumbar puncture: Also called a spinal tap, this procedure involves collecting cerebrospinal fluid from the spinal canal to check for inflammation, infection, or immune-related disorders.
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Treatment for Hand Numbness
Treatment measures for hand numbness include:
Physical Therapy
A physical therapy program may be prescribed that includes specific exercises and supportive measures such as wrist or elbow braces to reduce nerve pressure and discomfort. You may also be advised to avoid activities that worsen symptoms and to apply ice to help control pain and swelling.
Surgery
Surgical treatment is rarely required and is considered only when conservative treatments fail. Surgical options may include:
- Carpal Tunnel Surgery: The surgeon makes a small incision in the palm and cuts the carpal tunnel ligament to relieve pressure on the median nerve.
- Cervical Spine Surgery: This procedure involves fusing weakened cervical vertebrae to neighboring vertebrae to stabilize the spine and protect the cervical nerve roots.
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