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Left hand goes numb (paresthesia) - we are looking for causes of numbness

Paresthesia - what is it?

The human body is a complex ideally complete system that reacts to the slightest changes in the internal and external environment, manifesting itself in a number of signs and pathologies affecting our quality of life.

One of these symptoms is called paresthesia in medicine - this is when the left arm, right, or other parts of the body go numb. Besides the fact that paresthesia of the left upper extremity is a very difficult condition, accompanied by a feeling of tingling and crawling of the goose bumps, in itself it does not occur, but is the primary sign of quite serious diseases.


Causes of paresthesia - why does the left hand go numb?

Numb left hand

The genesis of this condition is caused by a violation of skin sensitivity as a result of radicular irritation or compression of nerve fibers, thereby disrupting the transmission of nerve impulses.

According to the localization of the pathological process, it is possible to determine the reason why, for example, the left arm grows numb from the shoulder to the very tips of the fingers.

In addition, this condition may be accompanied by:

  • Signs of hypalgesia (lowering the threshold of sensitivity);
  • Skin cyanosis (blue skin), which may be an indicator of lack of oxygen in the blood and a sign of pathologies of the cardiovascular and respiratory systems;
  • Feeling cold in the hand, evidence of circulatory disorders or disorders of the nervous system;
  • A painful symptom in the hand, often indicating a myalgic impulse syndrome from inflamed and damaged areas.

Many patients report a loss of sensitivity in their hands during the period of a night’s sleep or immediately upon waking. This can be explained by a long stay in an uncomfortable position, causing a violation of blood circulation in the limb. Muscle hypertonia and a violation of the continuous process of blood circulation can cause numbness of the left hand from the elbow to the hand, which cannot be associated with any disease.

It is only necessary to choose a comfortable orthopedic pillow and solve the problem by itself. But, here is the loss of sensitivity in the hand, which is manifested against the background of vascular pathologies or vertebral disorders - this is already a problem.

What diseases cause numbness of the hands and fingers?

numb left hand in little finger and ring finger

numb little finger on his left hand, photo

The main causative factors causing signs of paresthesia of the extremities include a number of internal pathologies.

Heart and Vascular Diseases

In almost 85% of patients, the feeling that the left hand is numb in the little finger and ring finger is the main indicator of cardiac diseases - acute coronary syndrome, CHF (chronic heart failure), followed by damage to the heart muscle (heart attack).

  • This may be ischemic pathology in the form of angina, with signs of which, the heart hurts, the left arm becomes numb, there is discomfort in the chest and shortness of breath. The sensation of paresthesia of the arm increases at night, and in the morning the symptoms manifest as numbness and tingling of the entire surface of the limb from shoulder to fingertips. If such symptoms last for more than an hour - you should not postpone the visit to the doctor.
  • If the left or right hand is completely numb, and including the fingers, in combination with speech, visual impairment and obstructed movement, a clear sign of a stroke is diagnosed. At the same time, if the loss of sensitivity is noted on the left side, this indicates violations of the cerebral circulation in the right hemisphere. Malfunctions of blood circulation in small vessels provoke paresthesia on the left hand and numbness of the fingers.
  • The combination of symptoms of paresthesia with high blood levels of sugar, typical of diabetic polyneuropathy, the result of which may be gangrene of the fingers. Acute vascular pathologies caused by atherosclerotic narrowing of the arteries (atherosclerosis) also cause impaired sensitivity of the upper limbs.

In patients who have stepped over 45 years of age, limb paresthesia is provoked by:

  • Thrombosis processes;
  • Atherosclerotic process in the vascular walls caused by pathological changes due to beriberi (deficiency of vitamin "A" and "B");
  • The failure of high-grade blood flow caused by muscle tightness due to nervous overstrain can cause a numb feeling in the left hand, little finger, and ring finger.

Vertebral diseases

A classic example of a disease that causes a loss of sensitivity in the area of ​​the shoulder girdle (numbness of the shoulder of the left hand) is the shoulder plexitis. His turn in soybeans can provoke:

  • Pathologies of purine metabolism ( gout );
  • Diabetes and alcohol syndrome;
  • Injuries and injured shoulder;
  • Musculoskeletal tears and sprains;
  • Injury of wrist and shoulder bone;
  • Syndrome compression-ischemic neuropathy (tunnel);
  • Cystic neoplasms in the ganglia, causing numbness of the fingers and little finger on the left hand;
  • Syndromes - Raynaud (ischemia of the hand) and cubital (clamping of the elbow nerves).

The development of paresthesia is a common problem with:

  1. Tendobursitis caused by articular inflammatory reactions in the shoulder. Accompanied by a strong pain syndrome in the shoulder area with radiating to the neck and shoulder girdle.
  2. The presence of cervical osteochondrosis , characterized by degenerative processes in the discs of the vertebrae, provoking root pinching of the nerve fibers and causing paresthesia of the limb, pain syndrome when the neck, arms and shoulders move.
  3. Spondylosis of the cervical spine - pathological processes in the spine caused by bone growths in the vertebrae. Paresthesia is accompanied by occipital pain, aggravated by the slightest movement.
  4. With ladder muscle syndrome, the arterial compression of the brachiocephalic trunk causes radicular irritation of the nerve fibers of the brachial plexus. Muscle tissue is compressed and pressed against the thoracic vertebrae, causing weakness, tenderness, and left-sided paresthesia.

All these factors can be safely added to the intercostal nerve neuralgia, intervertebral hernia formation and hypothermia factor. This suggests that a variety of reasons, completely eliminates self-diagnosis and self-treatment, and requires expert help.

Moreover, when clarifying - the usual living conditions may well be the only provocative factor of the disease, the elimination of which will correct the situation.

Causes of hand numbness

Causes of hand numbness

Paresthesia in the left hand can develop for completely different reasons, independent of the pathological processes in the body. May be a consequence of:

  • Daily, routine work related to manual printing;
  • Squeezing hands on clothes (elastic inserts);
  • Natural physical fatigue;
  • The specificity of the profession (painter, plasterer, embroiderer, etc.);
  • Inconvenient bedding, provoking a forced long-term position during sleep;
  • Hours of holding the limb in a sublime state (at shoulder level).

In such situations, the easiest way to get rid of paresthesia is to eliminate the causative factor or periodically knead the hand with massage, rubbing, or gymnastic exercises.

Treatment of paresthesia - what to do if your left hand goes numb?

Treatment of paresthesia

In each case, the problem of loss of sensitivity of the hand is decided by cardiologists, neurologists or vertebrologists. It is impossible to dismiss such symptoms, especially those who are prone to cardiovascular diseases.

Modern diagnostic techniques will help to quickly identify the causative factor. To identify the causes prescribe:

  1. MRI scan of the spinal cord / brain;
  2. Doppler sonography of the cervical vessels;
  3. X-ray examination of all parts of the spine;
  4. Rheovasography - diagnosis of blood circulation in the hand;
  5. Electroneuromyography - a comprehensive examination of the neuromuscular system;
  6. Examination of blood for toxins.

The therapeutic treatment plan is made in accordance with the identified pathology. If it is not found, the course of therapeutic treatment consists of drugs that act positively in violation of sensitivity.

The treatment course includes “Trental”, “Nicotinic acid”, “Paracetam”, “Actovegin”, vitamin complexes.

To restore sensitivity, physiotherapeutic methods are used - magnetic therapy, electrophoresis, dynamic currents and mud therapy.

In pathological processes in the trigeminal nerve, in combination with physiotherapy, Finlepsin is administered. As a preventive measure, detoxification of the body, compresses on the affected areas and prompt removal of tumors (when they are detected).

  • To improve tissue trophicity, drugs and ointments are prescribed - "Adenosine phosphate", "Methyluracil" or "Riboxin", "Vitamin E" and "Solcoseryl"

A balanced diet can help maintain a stable condition after treatment, partially or completely eliminating the use of salt and providing a large number of fruit and vegetable dishes as part of the diet. Refusal from alcoholic beverages and abstaining from smoking will only improve the condition.


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