From Dr. Z - Carpal tunnel syndrome specialist
If you get an electric shock feeling in your hand, you probably wonder what’s causing it. It usually happens when you grip or hold something, like grasping a coffee mug or lift a frying pan. You get a sudden electric shock sensation in your hand that may feel like it's shooting along your wrist, hand or fingers.
In some people, it happens occasionally. In others, it's a daily occurrence that can interfere with normal activities like typing, cooking, using a steering wheel, or even holding a book.
But make no mistake; this is an abnormal feeling. And it's one of the most common symptoms of carpal tunnel syndrome. While other types of neuropathy may cause shooting electric shocks in your hand, carpal tunnel syndrome is by far the most common.
Carpal tunnel syndrome is a condition that affects millions of people worldwide. In this article, we’ll explore why an electric shock feeling in your hand occurs, what’s happening in your body when you experience it, and how to manage carpal tunnel syndrome effectively based on the severity of your symptoms.
Carpal tunnel syndrome arises when there's damage to your median nerve. This nerve runs from your forearm into your hand. Damage occurs when it becomes compressed as it passes through the carpal tunnel. The carpal tunnel is a narrow passageway in your wrist which also contains tendons that allow you to grasp with your fingers.
This median nerve compression causes a type of damage called neuropathy. And it can lead to various symptoms, including pain, numbness, tingling, weakness, and that characteristic sensation of an electric shock.
The carpal tunnel passageway is surrounded by bones and ligaments. Any swelling or narrowing in this space can press on the median nerve. This nerve is responsible for sensation in most of your fingers (except the pinky). It also controls some of the muscles at the base of your thumb. When it’s compressed, it can’t function properly, leading to the discomfort associated with carpal tunnel syndrome.
The electric shock feeling in your hand is a direct result of irritation or compression of the median nerve. When this nerve is pinched, it sends erratic or abnormal signals to the brain. These signals are interpreted as sharp, jolting sensations akin to an electric shock. Your brain can also interpret the signals as pain, numbness or tingling.
Factors that can exacerbate median nerve compression include:
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In addition to an electric shock feeling in your hand, people with carpal tunnel syndrome may experience:
These symptoms often start gradually, mostly at night. If left untreated, they generally worsen over time, and extend into the daytime.
The good news is that carpal tunnel syndrome can often be managed effectively, especially when caught early. Treatment approaches depend on the severity or "stage" of the condition.
For mild stage carpal tunnel syndrome, the goal is to reduce pressure on the median nerve and prevent its progression.
There are 4 core stretching exercises which can improve tendon health, increase circulation, and reduce tension in the wrist. These stretches are below. They should be performed regularly, especially when stressing your hands. A more comprehensive discussion can be found at Stretching Exercises for Carpal Tunnel.
Wearing a wrist brace while sleeping helps keep your wrist in a neutral position. This reduces pressure on the median nerve. Night bracing (or "nocturnal splinting") is particularly effective for people whose symptoms worsen during sleep.
Caution: Wear only a "certified" carpal tunnel brace, and never a brace containing a palmar spine. (Such harmful braces are often sold in pharmacies, and can cause more nerve damage.) See this explanation about proper night bracing.
If you have symptoms of carpal tunnel syndrome, keeping you hand warm is important. And applying heat is extra beneficial because it speeds healing.
Heat therapy has numerous beneficial effects. It promotes blood flow, which is necessary to carry restorative oxygen and nutrients to damaged tissues. It also carries away damaged cellular debris.
Apply heat to your hand at night, before sleeping, for about 15 minutes. It's best to use a Heating Mitt or a heating pad rolled into a tube. (Hold the rolled-up shape with tape.) That's because heating both sides of the hand is optimal for healing.
If symptoms persist or worsen despite conservative measures, more intensive interventions may be needed.
Over-the-counter NSAID medicines such as ibuprofen and naproxen can help reduce inflammation. Less inflammation means less pressure on the median nerve, which alleviates the discomfort. Of course, once the medicine wears off in a few hours, the inflammation returns. This is why such medicines are considered a short-term remedy. Furthermore, long-term use of NSAIDs can result in kidney damage.
In some cases, a doctor may recommend corticosteroid injections into your wrist area. The steroid reduces swelling around the median nerve. The success rate of a corticosteroid injection at the moderate stage of carpal tunnel syndrome is about 45%. There can be significant side effects to the injection. Recurrence of symptoms occurs in about 60% of patients after 3-4 months.
The severe stage of carpal tunnel syndrome is when it progresses to your feeling the maximal intensity of symptoms. There is also visible atrophy of the thumb (thenar) muscles.
This procedure involves cutting the ligament that forms the roof of the carpal tunnel. The goal is to create more space for the median nerve which is being compressed by swollen tendons. Surgery is typically performed on an outpatient basis. Two types of surgery can be used, and both have advantages and disadvantages:
The patient satisfaction rate with either procedure is
about 50-60%. Symptoms may return within 2 years. After surgery,
post surgical rehabilitation is necessary. This is crucial to restoring hand strength and wrist flexibility.
Preventing carpal tunnel syndrome or minimizing its progression involves adopting wrist-friendly habits:
Taking regular "rest" breaks from stressful hand activities can help reduce the strains you put on your hand and fingers. The "30-30" rule is best to follow. That means for every 30 minutes of stressful hand activity (like typing) take a 30 second break. Your break will be even more effective when, during that break, you perform the 4 core stretching exercises below.
The 4 core stretching exercises discussed above are crucial to preventing carpal tunnel syndrome. A more in-depth discussion of each exercise can be found at Stretching Exercises for Carpal Tunnel.
Most people can prevent carpal tunnel syndrome if they disengage from harmful hand activities. Pay attention to your hand/finger activities and adopt more finger or wrist-friendly habits. The specific finger and hand motions which can result in carpal tunnel can be found at Harmful Activities.
Protecting you hands can mean different things to different people. For instance, wear insulated gloves to never allow your hands to get cold. Wear thick padded gloves when riding a bike, lifting weights, or using vibrating tools. Use ergonomic equipment (mouse, keyboard, scissors, can opener, etc.) when possible. And of course, use proper sitting posture when typing.
Getting an electric shock feeling in your hand can be alarming. But it’s often a telltale sign of carpal tunnel syndrome. Understanding why this sensation occurs — and addressing the underlying cause — is key to finding relief. Whether your symptoms are mild, moderate, or severe, a range of treatment options are available to help you regain comfort and functionality. By taking proactive steps, you can manage carpal tunnel syndrome effectively and keep your hands healthy for years to come.