Paleness is an abnormal loss of normal skin or mucous membrane color.

Unless pale skin is accompanied by pale lips, tongue, palms of the hands, inside of the mouth, and lining of the eyes, it is probably not a serious condition, and does not require treatment.

Pale-looking skin does not necessarily indicate disease -- lack of sunlight or inherited paleness may be the reason.

Although generalized paleness (pallor) affects the entire body, it is most apparent on the face, lining of the eyes, inner mouth, and nails. Localized pallor usually affects a single limb.

How easily pallor is diagnosed varies with skin color, and the thickness and amount of blood vessels in the tissue under the skin. Sometimes it is only a subtle lightening of skin color. Pallor may be very difficult to detect in a dark-skinned person -- sometimes it is apparent only in the eye and mouth lining.

Paleness may be the result of decreased blood supply to the skin (cold, fainting, shock, hypoglycemia) or decreased number of red blood cells (anemia).

• Normal fair complexion
• Lack of exposure to the sun (it is healthier to be pale than tanned)
• Anemia (blood loss, poor nutrition, or underlying disease)
• Shock
• Frostbite
• Chronic diseases including infection and cancer

• A person suddenly develops generalized pallor. Emergency action may be required to maintain proper circulation.
• Paleness is accompanied by shortness of breath, blood in the stool, or other unexplained symptoms.

The medical history will be obtained and a physical examination performed.

Medical history questions documenting your pallor in detail may include:

• Did it develop suddenly?
• Did it develop in response to reminders of a traumatic event?
• Is it all over (generalized)?
• Is it only in one location? If so, where?
• What other symptoms are also present?
• Is there pain in an affected body part?
• Is there shortness of breath?
• Is there blood in the stool?
• Are you vomiting blood?
• Is there a pale arm or hand, or leg or foot, and the pulse cannot be felt in the area?

Diagnostic tests that may be performed include:

• Extremity arteriography (if pallor is localized)
• Blood studies (CBC or blood differential )