Q:

Why do my fingers turn blue?

A:

Quick Answer

Blue discoloration of the fingers or nails, known as cyanosis, usually occurs when normal oxygen flow in the body is interrupted, Healthline states. Whether temporary or recurrent, Raynaud's syndrome may cause the condition, or a defect of the lungs of heart may trigger it.

 Know More

Full Answer

Cyanosis can occur rapidly when a person is choking or having a seizure, according to Healthline. When the condition is related to chronic heart or lung diseases, it usually develops slowly over time from conditions such as asthma, chronic obstructive pulmonary disease or congestive heart failure

Cyanosis develops when red blood cells are unable to deliver an adequate oxygen supply to body tissue, causing the blood to turn dark bluish-red, according to MedlinePlus. The condition can produce discoloration throughout the body, but it is often difficult to detect, especially in darker skin. When cyanosis only affects one hand, it is most likely caused by Raynaud's syndrome or a blot clot that is temporarily limiting oxygen flow in the hand.

During periods of stress or exposure to cold, Raynaud's syndrome triggers repeated episodes of constricted blood vessels in the fingers and toes, causing numbness, Cleveland Clinic states. The most common form, primary Reynaud's syndrome, occurs spontaneously with no underlying cause, while the secondary form is related to pre-existing medical conditions, such as heart disease or carpal tunnel syndrome. People living in cold environments are more likely to be affected because narrowed blood vessels interfere with the body's attempts to conserve heat.

Learn more about Pain & Symptoms

Related Questions

  • Q:

    Why do periods hurt?

    A:

    Most women experience painful periods when the womb's muscular wall contracts and presses against the blood vessels, which, in turn, restricts the flow of oxygen to the womb, causing pain that can spread to the back and thighs. Women in their 30s and 40s may experience pain because of different conditions in the pelvis and the womb. Painful periods are common in teenagers, and they tend to get less painful as a person grows older, as stated by Patient.

    Full Answer >
    Filed Under:
  • Q:

    What causes an eye to pulsate?

    A:

    Causes of a pulsating eye include eye infections or irritation, lack of sleep and fatigue and stress, Healthline states. In most cases, eyelid pulsation does not indicate that there is a serious underlying disorder.

    Full Answer >
    Filed Under:
  • Q:

    What is a PET scan, and does it help fight cancer?

    A:

    A PET scan is an imaging test that measures blood flow, oxygen use, glucose metabolism and other body processes, according to Healthline. It is commonly used to detect cancers because it shows tissue abnormalities at the cellular level.

    Full Answer >
  • Q:

    Why is iron important?

    A:

    Iron is an important mineral that helps transport oxygen flow throughout the body. Iron is also a vital component of maintaining healthy nails, hair, skin and cells.

    Full Answer >
    Filed Under:

Explore