What causes numbness in the fingertips?

The causes of numbness in the fingertips may involve multiple aspects: 1. Nerve compression: This is one of the most common causes, such as carpal tunnel syndrome and cervical spondylosis. Prolonged housework, computer or mobile phone use can all lead to nerve compression, resulting in numbness in the fingertips. 2. Poor blood circulation: Vascular narrowing, plaque formation, or insufficient blood supply can also cause fingertip numbness, especially when there is a problem with the blood vessels in the arm or upper arm. 3. Peripheral neuropathy: Poor blood sugar control in diabetic patients or certain medications may cause nerve damage, leading to peripheral neuropathy and resulting in numbness in the fingertips. 4. Brain disorders: Lesions of the central nervous system such as cerebral infarction, cerebral hemorrhage, encephalitis, and brain tumors may also cause numbness in the fingertips. If symptoms persist or worsen, it is recommended to seek timely medical evaluation.