Hand Numbness : Causes, Symptoms, Diagnosis & Treatment

Last Updated: 29/08/2022

Numbness of the hand is noted with damage to peripheral nerves, nerve plexuses and roots, some other neurological diseases, injuries, vascular diseases. Occurs constantly or worries periodically, combined with pain, paresthesia, weakness, muscle atrophy. The etiology of numbness is determined taking into account the history, data from a general and neurological examination, EFI, radiography, MRI, CT, and laboratory tests. Treatment includes painkillers, medicines to improve blood circulation and reduce muscle tone, vitamin preparations, and physiotherapy.

Why is my hand numb

Physiological causes

Short-term numbness immediately after waking up is provoked by compression of blood vessels and nerves due to the uncomfortable position of the hand. Accompanied by tingling, “goosebumps”, “disobedience” of the limb. It occurs in people who put their hand under the body or under the pillow, throw a limb behind their head. Disappears a few minutes after changing the position of the body.

Neuropathy

Numbness of the hand is determined with neuritis of infectious etiology, neuropathies due to compression of the nerve trunks by bone growths, tumors, inflammatory infiltrates:

  • Radial nerve. Hypesthesia is found on the back of the shoulder, the back of the forearm.
  • Ulnar nerve. There is a violation of sensitivity on the ulnar side of the palm.
  • median nerve. The radial half of the palm suffers.

Polyneuropathies

They are characterized by a symmetrical lesion of the hands. At first, the distal parts of the limb are mainly involved in the process, then numbness, paresthesia, and other symptoms spread in the proximal direction. Polyneuropathies occur with alcoholism, severe somatic diseases, oncological processes, some infections, vibration disease, exogenous intoxications. Sometimes they develop during pregnancy.

Plexit

The defeat of the upper bundle of the brachial plexus is manifested by numbness of the outer side of the forearm and shoulder, the lower bundle - hypoesthesia of the inner side of the shoulder, forearm, hand. It is combined with muscle weakness of the same localization. With total involvement of the brachial plexus, a decrease or loss of sensitivity is detected both on the outside and on the inside of the arm. The cause of the development of shoulder plexitis are:

  • Birth trauma with the formation of obstetric paralysis.
  • Traumatic injuries : dislocation of the shoulder, fracture of the clavicle, damage to the ligamentous apparatus of the shoulder joint.
  • Compression of the brachial plexus : aneurysm, hematoma, cervical rib, neoplasm.
  • Infectious diseases : herpes, cytomegaly, brucellosis, tuberculosis, syphilis.
  • Dysmetabolic disorders : diabetes mellitus, gout, dysproteinemia, metabolic diseases.
  • Iatrogenic injuries during operations and manipulations.

Hand numbness

 

scalene syndrome

Scalenus syndrome occurs as a result of compression of the branches of the brachial plexus, subclavian arteries and veins by scalene muscles. A characteristic feature of the pathology is the sudden onset of symptoms. Pain in the neck, arm, head is complemented by muscle weakness, paresthesia, pallor of the skin of the arm, weakening or absence of a pulse. The area of ​​numbness is determined by the involvement of certain branches of the plexus.

The most common cause of scalene syndrome is cervical osteochondrosis. Muscle compression also develops with curvature of the spine, after injuries, against the background of congenital anomalies, weightlifting, significant weight gain.

radicular syndrome

Numbness of the hand develops with compression, traumatic injury, inflammation of the spinal roots at the level of the lower cervical and upper thoracic vertebrae. The causes are osteochondrosis, intervertebral hernia, spondylosis. The symptom can be detected with injuries of the spinal column, spondylolisthesis, osteomyelitis of the vertebrae, spinal meningitis. Sometimes the radicular syndrome is formed against the background of neurinomas of the roots, tumors of the spinal cord. The topic depends on the affected root:

  • C5 - numbness on the outer side of the shoulder;
  • C6 - the sensitivity of the outer surface of the forearm is disturbed;
  • C7 - the back surface of the shoulder and forearm suffers;
  • C8 - hypoesthesia is detected along the inner surface of the forearm;
  • T1-T2 - possible numbness of the hand.

Myelopathy

Dystrophic changes in the spinal cord are accompanied by sensory disturbances below the level of injury. The degree of change depends on the extent of the lesion. Hypesthesia or loss of sensitivity of the hands is caused by myelopathies of the following genesis:

  • Spondylogenic and discogenic: osteochondrosis, spondylosis, spondylarthrosis, involutive spondylolisthesis, disc protrusion, intervertebral hernia
  • Ischemic: transient cerebrovascular accident, spinal stroke.
  • Post- traumatic : concussion, spinal cord contusion, fractures with spinal cord injury, other spinal cord injuries.
  • Carcinomatous : paraneoplastic processes in lymphogranulomatosis, leukemia, lung cancer, and other oncological processes.
  • Infectious : neuroAIDS, neurosyphilis, Lyme disease.
  • Others : toxic, radiation (against the background of radiation therapy), metabolic (with endocrine diseases, metabolic disorders).

Other nervous diseases

Numbness and tingling is the most common type of migraine aura. It starts at the fingertips, spreads to the entire arm, half of the neck. Then the violations disappear, replaced by a headache. Numbness, tingling, burning with senestopathies are distinguished by a significant variety of localization, a combination with other, often pretentious complaints. Sensations are migratory, periodic or constant, and can spread to various areas of the body, including the hands.

Vascular damage

Takayasu's disease is manifested by numbness, weakness, pain in the hands, resulting from an inflammatory lesion of the aorta and large arteries. Depending on the location of the inflammation, one or both limbs may be affected. An external examination reveals a weakening or absence of pulsation, blanching of the hands. Fainting, dizziness, visual disturbances, heart problems are possible.

Unlike other obliterating vascular diseases, thromboangiitis obliterans can affect the vessels of not only the lower, but also the upper extremities. Pain, numbness in the hands and forearms, blanching, cyanosis of the distal parts of the extremities, absence of a pulse, the formation of painful nodules on the fingers, and trophic disorders are noted.

Other reasons

A list of other medical conditions that may be accompanied by hand numbness includes:

  • ODS diseases : bursitis of the shoulder joint, humeroscapular periarthrosis.
  • Cardiovascular pathologies : ischemic heart disease, myocardial infarction.
  • Mental disorders : panic disorder, hysteria.

Diagnostics

The etiology of hand numbness is established by a neurologist. In case of vascular pathology, a consultation with a vascular surgeon is required. The specialist studies the history of the disease, assesses the condition of the limb, the pulse on the arteries, detects edema, signs of inflammation, and other changes. Neurological examination involves the study of sensitivity, reflexes, muscle strength. According to the results are assigned:

  • Electrophysiological Research . ENG, EMG, evoked potentials are carried out to differentiate lesions of nerves, muscles and structures of the central nervous system, to clarify the localization, the degree of damage to the nerve trunk.
  • Radiography . It is performed with injuries, suspected nerve compression by bone growths, neoplasms. Visualizes fractures, dislocations, osteophytes, bone deformities.
  • Vascular research . Informative for scalene syndrome, Takayasu's disease, thromboangiitis obliterans. To determine the localization and severity of occlusion, ultrasound of vessels, angiography, and aortography can be performed.
  • Other Imaging Techniques . Computed and magnetic resonance imaging are performed for diseases and traumatic injuries. They are prescribed for ambiguous results of basic studies, planning of surgical interventions.
  • Laboratory tests . Recommended for confirming the infectious and dysmetabolic genesis of polyneuropathies, diagnosing Takayasu's disease.

Acupuncture

 

Treatment

Help at the prehospital stage

In case of numbness due to neurological diseases, it is necessary to exclude loads that provoke an increase in symptoms, take regular breaks to rest the hands. In case of traumatic injuries, the injured segment of the limb should be fixed or the victim with a spinal injury should be placed on the shield, and an anesthetic should be given. Increasing swelling, intense pain, followed by numbness of the limb, are the reason for an immediate appeal to a specialist.

Conservative therapy

The treatment regimen for neurological causes of hand numbness includes the following areas:

  • Pain relief . Apply drugs from the group of NSAIDs, with severe pain, a blockade is performed with an anesthetic or a mixture of an anesthetic and a corticosteroid drug.
  • Normalization of muscle tone . Tolperisone, methyllicaconitine hydroiodide, baclofen are effective in reducing muscle tone and eliminating spasms.
  • Improvement of blood circulation . Pentoxifylline, eufillin, troxerutin are recommended to improve blood supply, stimulate venous outflow.

Patients are prescribed B vitamins, diuretics to eliminate edema. According to the indications, the treatment plan is supplemented with chondroprotectors. Chronic pain may require antidepressants. The list of non-drug methods includes ultraphonophoresis, UHF, hydrotherapy, therapeutic mud, applications of ozocerite and paraffin. An important role is assigned to massage, exercise therapy, manual therapy, reflexology.

In Takayasu's disease, immunosuppressive agents, antiplatelet agents, and anticoagulants are recommended. Carry out cascade filtration of plasma, lymphocytapheresis, plasmapheresis. With thromboangiitis, antispasmodics, NSAIDs, agents for improving the rheological properties of blood, and activating local metabolism are used. They issue a referral to ILBI, hyperbaric oxygenation, hemosorption.

Surgery

The tactics of surgical intervention is determined by the nature of the pathology that provoked numbness of the hands. Neuralgia due to compression of the nerve by a tumor, scars, fibrous or bone growths are considered as an indication for neurolysis, tumor removal or decompression intervention.

For pathologies of the spine, discectomy, correction of scoliosis, operations to eliminate spinal canal stenosis and instability of the spinal column are used. The elimination of the cause of the occurrence of shoulder plexitis is carried out by removing the cervical ribs, excising tumors and aneurysms, and correcting the position of fragments in fractures.