Right hand? With the development of the Internet, a lot of information on medical topics has appeared in the public domain. And everyone strives to express their point of view on any issue. So it is with the situation when the little finger of the right hand goes numb. Some say that it's all about heart problems, others call osteochondrosis the cause, others blame everything. But in order to understand the reason, you must first understand what numbness is.
What is paresthesia
Numbness in the language of doctors is called paresthesia. It indicates a violation of the functioning of nerve endings. That is why the little finger of the right hand or the left becomes numb. The cause of paresthesia is a violation of blood circulation due to an uncomfortable posture, blows or pressure. Chronic paresthesia can be caused by tumors and infections, as well as alcohol abuse. In some cases, the little finger on the hand goes numb due to a metabolic disorder or beriberi.
Features of the nervous system
The nervous system has a central and peripheral divisions. Pairs of nerves pass through the brain and back, forming plexuses. One of these plexuses is the brachial. It consists of 8 short and 6 long nerves. Short nerves in no way relate to the situation when the little finger of the right hand goes numb. But one of the nerves, called the ulnar, branches into the dorsal and palmar branches. This is the dorsal branch and is responsible for the nerve endings of the fingers. The ulnar nerve runs through the joint and wrist, so pinching it anywhere can impair sensation in the little finger. To determine the exact cause of numbness, as a rule, an MRI of the cervical region is performed. In addition, injuries to the shoulder, wrist, and elbow contribute to numbness, even if they are long gone. 
Features of tunnel neuropathy
Another reason may be the constant compression of the now peripheral nerve as a result of physical exertion. There are veins and arteries in the human body. The latter carry oxygenated blood from the heart, it is thanks to it that all processes in the body are supported. Veins, on the contrary, serve to circulate blood saturated with decay products. The artery, originating near the clavicle, later branches into the ulnar and radial. Radiation contains 
superficial and deep branches that supply the wrist and hand with oxygen. But circulatory disorders can lead to a lack of oxygen, resulting in a lack of oxygen can be caused by blood clots, plaques resulting from atherosclerosis, as well as trauma.
Therefore, we can conclude that the cause of the condition in which the little finger on the right hand goes numb is, as a rule, diseases of the nervous or vascular system. No osteochondrosis, heart disease has nothing to do with it. With the right diagnostic examination, proper treatment, elimination of the old injury, the symptoms of numbness will disappear quickly and without a trace, while you will forget that you had something with your finger there.
