Finger numbness can not only significantly affect our ability to perform daily tasks, but also make uncomfortable changes in our lifestyle. And although the numbness of the little finger, as a rule, occurs as a result of nerve compression, it can also be associated with another disease. Why does the little finger on my right hand go numb?
Numb of the little finger on the right hand: the reasons
Are you worried about numbness and tingling in your little finger and general weakness in your right hand? This is what doctors call carpal tunnel syndrome, as well as nerve compression in the elbow. Read about these and other possible causes and symptoms of diseases.
Pinched nerve in the cervical spine
Nerve fibers that give sensitivity to fingers begin in the cervical vertebral part. Eight pairs of cervical roots of nerve fibers branch off from the spinal cord, pass into the intervertebral holes. The eighth dorsal nerve determines the sensitivity of the outer side of the forearm up to the little finger. Pressure on this nerve can cause numbness.
Herniated disc and arthritis are the most common causes of compression of the nerve root in the neck. The vertebrae are separated from each other by discs that can come out of their normal position, forming a hernia. Hernia, located below the seventh cervical vertebra, increases the pressure on the eighth spinal nerve, which leads to a decrease in sensitivity in the little finger.
With age, the space between the vertebrae decreases. Arthritis causes inflammation of the intervertebral joints, reducing the size of the holes through which the nerve roots pass. Arthritis between the seventh vertebra and the first thoracic increases the pressure on the eighth cervical root, causing numbness in the little finger.
Carpal tunnel syndrome
The spinal roots split into a multitude of nerves that provide sensitivity to the muscles in the arm. The ulnar nerve branches off from the eighth cervical and first thoracic nerve root. It passes between the muscles through the inner side of the elbow and gives sensitivity to the forearm, ring finger and little finger. The impact of a right elbow on a hard surface aggravates the nerve fibers and causes numbness of the ring finger and little finger on the right hand. This condition usually resembles an electric shock.
Some factors contribute to the formation of pressure on the nerve of the elbow. This can occur under the action of muscles and tunnel structures that compress the nerve, causing the little finger to become numb. The ulnar nerve may be damaged due to an elbow injury or prolonged exposure to pressure, for example, if you rest on the armrest in a car for a long time.
Elbow nerve fibers run along the inner forearm and then into the wrist along a tunnel called the Guyon Channel. The nerve enters the brush through the little finger. Infringement of the nerve in the elbow or the occurrence of tunnel syndrome affects the sensitivity of the little finger. Tumors, cysts, blood vessel disease and arthritis create extraneous pressure on the nerve in the Guyon tunnel.
Microtrauma as the cause of numbness of the little finger
Small nerve endings from two to three millimeters in diameter as a network entangled fingers. Damage to one of these nerves can cause numbness of the little finger on the side where there was a microtrauma.
Nerve end microtraumas are usually caused by wounds or traumatic injuries of the hands. In such cases, surgery is usually required to restore the nerves and the sensitivity of the finger.
Numbness in the little finger can be a symptom of the underlying disease. For example, diabetes can damage nerve endings. This condition is called diabetic neuropathy. This damage can occur due to prolonged exposure to high blood sugar or poor blood circulation.
The little finger may also lose sensitivity due to a stroke. Blood clots or damage to blood vessels reduce its flow to the brain. Sudden numbness or tingling in the fingers, especially on one side of the body, may indicate that it is a stroke. If you experience these symptoms, consult a doctor immediately.
Often the cause of numbness of the little finger on the right hand is wrist or elbow neuropathy. It is no secret that most of us are right-handers, so the right arm has more pressure, resulting in the defeat of the ulnar nerve and, as a result, numbness of the little finger.
Diagnosis and treatment
Depending on the causes of numbness of the little finger on the right hand, appropriate treatment and preventive measures are prescribed. The most effective way to treat tunnel syndrome is to change the conditions that caused the problem:
- try not to lean on your elbow while driving or sitting at the office desk;
- do not keep your arm bent in your elbow more than 90 degrees for a long time;
- eliminate multiple flexion and extension of the elbow;
- try sleeping on your side with a pillow supporting the entire length of your arm;
- wrap a towel around your elbow or put a splint on overnight to keep your arms straight;
- if it is not possible to exclude cases of painful impact on the elbow, adapt a small cushion for it to soften;
- in the treatment of first-line drugs are anti-inflammatory drugs to reduce inflammation due to infringement;
- another option for medication is injection of cortisone into ligaments;
- in extreme cases, surgery is performed under local anesthesia in the form of a resection of the ligament to release the median nerve or to push it.
As a rule, the numbness of the little finger on the right hand occurs due to excessive stress on the elbow joint and often repetitive movements. It is possible to cope with this syndrome by resorting to the listed methods. But we can not exclude the more serious causes of this symptom, so it is best to consult a doctor.