Why does my arm feel numb after being pressed for a while

The numbness of the arm after a short period of pressure is usually related to brief nerve compression, which may be caused by physiological compression or pathological factors. The main causes are local blood circulation obstruction, abnormal nerve conduction, cervical spondylopathy, diabetes peripheral neuropathy, carpal tunnel syndrome, etc.

1. Local blood circulation obstruction

Prolonged compression of the arm can lead to local blood vessel compression, poor blood circulation, and temporary hypoxia and ischemia of nerve tissue. This situation is more common in sleeping on the table or resting on the arms. After relieving the pressure, the numbness usually subsides within a few minutes. In daily life, one should avoid prolonged compression of one limb and engage in appropriate activities to promote blood flow recovery.

2. Abnormal nerve conduction

When peripheral nerves are subjected to sustained pressure, temporary damage to the myelin sheath structure may occur, affecting electrical signal transmission. Commonly seen in the compression of the ulnar nerve at the elbow joint, manifested as numbness in the little finger and ring finger. Suggest adjusting sleeping or sitting posture and using soft cushions to protect the nerve walking area of the elbow.

3. Cervical spondylosis

Cervical disc herniation or bone hyperplasia may stimulate nerve roots, leading to radiation numbness in the upper limbs. This type of numbness is often accompanied by symptoms such as neck pain and arm weakness, which worsen after being compressed. The diagnosis needs to be confirmed through cervical MRI, and conservative treatments such as traction and physical therapy can be used.

4. diabetes peripheral neuropathy

Long term hyperglycemia will damage nerve microvessels, making peripheral nerves more sensitive to compression. The patient may experience symmetrical numbness in the hands and feet, and the recovery may be slow. It is necessary to strictly control blood sugar and improve symptoms with neurotrophic drugs such as methylcobalamin.

5. carpal tunnel syndrome

Compression of the median nerve in the wrist can cause numbness from the thumb to the middle finger, which worsens at night or while holding objects. It may be related to long-term repetitive hand movements. Early relief can be achieved through wrist braces, and in severe cases, surgery is needed to release the transverse wrist ligament.

It is important to maintain the correct posture in daily life and avoid prolonged weight-bearing on one limb. During office hours, move your upper limbs every half hour, and choose a pillow of appropriate height during sleep. If numbness occurs frequently or does not alleviate continuously, it is recommended to seek medical advice to check cervical spondylosis, diabetes and other potential diseases. B vitamins can be supplemented appropriately to promote local blood circulation through hot compress and massage, but excessive rubbing of numb areas should be avoided.