The loss of sensation or feeling in your hand or fingers is referred to as numbness. Numbness in the hands is frequently associated with additional alterations, such as a pins-and-needles sensation, burning, or tingling. It’s possible that your arm, hand, or fingers feel awkward or weak.
Numbness can develop symmetrically in both hands or along a single nerve in one hand.
Causes of Numbness in Hands
The causes of numbness can be cardiovascular, neurological, musculoskeletal, or autoimmune. Common causes include:
1. Heart Attack
Chest pain, as well as tingling and numbness down one arm or the other, can be caused by severe blockages in the heart’s main blood supply. Other common symptoms of heart attack might include:
- Breathing problems
- numbness and tingling on both sides of the body
- shoulder ache
- unexplained exhaustion
A stroke can occur when blood flow to the brain is disrupted, such as by a traveling blood clot or a ruptured artery causing a brain bleed.
Signs and symptoms of stroke include:
- sudden weakness or numbness on one side of the body
- lower facial drooping on one side
- Have trouble keeping your balance
- visual issues
- issues with speech
3. Carpal Tunnel Syndrome
Carpal tunnel syndrome is a condition caused by repeated motions of the hand and wrist, such as typing, writing, or pressing buttons. The actions exert strain on the hand’s median nerve, which is a key nerve. The person feels pain, numbness, and tingling in the wrist, hand, and occasionally the arm as the motions strain the nerve.
Carpal tunnel syndrome normally worsens with time, so getting a diagnosis and treatment from a specialist as soon as possible will help you avoid major complications.
Most doctors will tell you to wear a wrist splint or limit your activities until the irritation goes away.
Some medications can induce nerve damage, also known as neuropathy, which affects the peripheral nerves and causes numbness and tingling in the hands and feet. The drugs may be harmful to the myelin sheath or nerve axon, causing damage and interfering with nerve signals.
Neuropathy can be a potential adverse effect of the following drugs amiodarone, hydralazine, cisplatin, vincristine, isoniazid, metronidazole and phenytoin.
5. Trauma to Hand
Numbness in the right hand can also be caused by physical trauma. Numbness is likely to occur if an external incident, such as a vehicle accident, cuts, strains, or compresses a nerve in the hand.
A person who has been physically injured should see a doctor for an evaluation so that they can determine the severity of the injury.
Diabetic neuropathy or nerve damage can be caused by high blood glucose levels. Nerve injury usually affects the peripheral nerves in the feet and occasionally the hands, resulting in tingling and numbness.
7. Spinal Cord Injury
Tingling and numbness in the hands and feet may occur as a result of a spinal cord injury. Spinal cord injuries can be caused by a variety of things, including falls, car accidents, head traumas, gunshot wounds, and a variety of other things.
Depending on which part of the body is injured, the symptoms may differ. Some examples are:
- movement problems
- loss of sensation
- loss of urine bladder control and big bowel control
8. Nutritional Deficiency
Low vitamin B12 can cause nerve problems resulting in tingling or numb hands and feet. Associated symptoms of a vitamin B12 deficiency include fatigue, weakness, constipation, anemia, weight loss, loss of appetite, neurological issues like confusion, depression, and balance issues.
9. Herniated Cervical Disk
A cervical disk in the neck might slip or herniate due to deterioration or an acute injury. The herniation could cause the spinal canal to narrow, exerting pressure on the nerve root. The hand and arm may experience numbness, weakness, and tingling as a result of this.
Physical therapy, rest, and pain medication are all used to treat a herniated disk. A doctor may propose surgery or injections in some cases.
10. Brachial Plexus Injury
The brachial plexus is a neural network that runs from the spine to each shoulder. This network relays information from the spine to the shoulders, arms, and hands.
Shoulder injuries, tumors, and other forms of inflammation can damage the brachial plexus, resulting in numbness in the hand.
When To See The Doctor
A variety of medical disorders can cause tingling and numbness. If a person feels they or someone close to them is having a heart attack or stroke, they should seek medical help right away.
Other symptoms that should prompt a person to seek medical help include:
- sensation loss in the hand that is persistent, sudden, or deteriorating
- a physical malformation of the hand or arm that is visible
- pain that worsens rather than improves
- gradual deterioration
A person should contact a doctor if they have any symptoms connected to strange feelings in their arms or hands.