Fingers on the right arm grow dumb for various reasons, and not always pathological. For example, numbness of the hand or individual fingers can be observed with a long stay in an uncomfortable static position during sleep or while wearing clothes with tight cuffs, tight elastic bands in the sleeves. In general, experts identify six major groups of negative factors that affect the decrease in finger sensitivity:
- pathological processes in the spine;
- inflammation of the joints;
- violation of blood supply of tissues;
- physical trauma;
- endocrine diseases;
- lesions of the nervous system.
Why are the fingers on the right arm numb?
Determine the cause of numbness can sometimes be based on which of the fingers on the right hand loses sensitivity:
- For example, the index and middle fingers on the right arm become numb due to inflammation of the elbow joint or nerve endings in the forearm, the ring finger and little finger on the right hand are most often numb when the cardiovascular system fails.
- Also, numbness in the little finger can indicate the development of osteochondrosis in the cervical spine.
- Why the thumb on the right arm is numb, it is more difficult to understand, but experts believe that the most probable cause is the tunnel syndrome - the result of muscle strain due to the repetition of monotonous movements over a long period of time by people in certain professions - computer technicians, seamstresses, pianists, etc. In addition, the tunnel syndrome can affect the ring finger and little finger.
Let's take a closer look at the common diseases, one of the symptoms of which is numbness of the fingers.
Cervical osteochondrosis
Degenerative-dystrophic processes in the spine are associated with deformation of the intervertebral disc and loss of elasticity of the fibrous ring. At the same time, the nerve endings are jammed, and the pain irradiates from the neck to the fingertips. Characteristically, with osteochondrosis, the hand or individual fingers of one of the arms usually become numb.
Rheumatoid arthritis
With rheumatoid arthritis, the numbness of the fingers arises from the damage to the joints of the hand. The disease is also characterized by such signs as:
- difficulty in flexing-extension;
- deformation of the joints;
- swelling and redness;
- constant pain;
- muscular atrophy.
In addition to joints, pathological changes occur in the cardiovascular, respiratory, digestive systems of the body and kidneys.
Circulatory disorders
Hypesesia in the hand can be associated with circulatory disorders in the following diseases:
- thrombosis;
- blockage of cerebral vessels;
- ischemic stroke.
The thrombosis of the upper limb threatens the development of necrosis and, ultimately, the possible loss of the limb. Left-sided ischemic stroke is determined by the simultaneous feeling of numbness in the right arm and right leg. In addition, signs of a stroke are nausea and severe headache.
Raynaud's disease and carpal tunnel syndrome
Negative changes in the nervous system - one of the likely causes of loss of sensitivity of the fingers of the right hand. Raynaud's disease is caused by a violation of the regulation of the tone of small vessels. The syndrome of the carpal canal is associated with pinching of the median nerve in the wrist and, as a consequence, a decrease in the functionality of the brush. If you do not carry out systemic treatment under the supervision of a doctor, the outcome of both diseases is sad - tissue atrophy and incapacity of the limb. With Raynaud's disease, the possibility of developing irreversible necrotic processes is not ruled out.