Numbness in the fingers can have many different causes, from carpal tunnel syndrome to some types of neuropathy. In some cases, treatment may simply require a change in the way that a person uses their hands. However, medication or surgery may be necessary for cases with more complex underlying causes. The median nerve passes through it, and the pinching of this nerve can cause numbness, itching, or pain in the thumb, index finger, middle finger, and ring finger. Carpal tunnel syndrome often causes the hand to go numb while a person is sleeping because of the position that they hold it in. To diagnose carpal tunnel syndrome, a doctor will take a detailed medical history, asking about any other conditions that a person has, how they use the wrist, and if they have experienced any prior injuries.
Carpal tunnel syndrome is a common condition with numbness in hands. However, it is not the only cause of hand numbness. Other potential causes are listed below. Compression neuropathy is pressure on a nerve anywhere along its course Figure 1. In addition to numbness, compression neuropathy can cause weak or twitchy muscles. The pressure may come from many sources. It can occur after an injury due to bleeding or swelling.
Numbness and tingling are common problems, and the nerve supply to the thumb and hand is complicated. If you feel a numbness in your thumb or hand, nerve compression is a likely cause. While it is less common, it's important to know if the cause is something dangerous.
Carpal tunnel syndrome is caused by pressure on the median nerve. The carpal tunnel is a narrow passageway surrounded by bones and ligaments on the palm side of your hand. When the median nerve is compressed, the symptoms can include numbness, tingling and weakness in the hand and arm. The anatomy of your wrist, health problems and possibly repetitive hand motions can contribute to carpal tunnel syndrome.