The causes of darkening of fingers include hyperpigmentation, endocrine diseases and blood transport disorders.
1. Hyperpigmentation: When the patient only has the symptom of darkened fingers without pain, the first consideration is hyperpigmentation caused by long-term exposure to ultraviolet rays.
2. Endocrine diseases: for example, when the adrenal cortical function is reduced, the patient may also have the symptom of darkening of the skin.
3. Blood transport disorders: If thromboembolism occurs in the blood vessels supplying blood to the fingers, due to ischemia and hypoxia necrosis of the fingers, the darkening of the skin may also occur.
Finger blackening may have other causes, it is recommended to go to the hospital in a timely manner, to clarify the cause of the disease, and then follow the doctor’s instructions to standardize the treatment.