Red flags 7 - 10
7. Red flag: Red, itchy eyes
What it means: Many things can irritate eyes, but itchiness accompanied by sneezing, coughing, sinus congestion, and/or a runny nose, usually screams "I'm allergic!" When the eyes are involved, the trigger is usually airborne, like pollen, dust, or animal dander.
More clues: An eye allergy can also be caused by certain cosmetics or ointments. Some people, for example, are allergic to the preservative in eye drops used to treat dry eyes.
What to do: Staying away from the allergic trigger is the usual treatment. Antihistamines can treat the itchiness; those in eye-drop or gel form deliver relief to the eyes faster. If the problem turns out to be an allergy to eye drops, look for a preservative-free brand.
8. Red flag: Whites of the eye turned yellowish
What it means: Two groups of people most often show this symptom, known as jaundice: Newborns with immature liver function and adults with problems of the liver, gallbladder, or bile ducts, including hepatitis and cirrhosis. The yellow in the white part of the eye (the sclera) is caused by a buildup of bilirubin, the by-product of old red blood cells the liver can't process.
More clues: "Other tissues of the body would have the same look, but we can't see it as clearly as in the whites of the eye," says ophthalmologist Iwach. (Skin can also turn yellowish when a person consumes too much beta carotene -- found in carrots -- but in those cases the whites of the eyes remain white.)
What to do: Mention the symptom to a doctor if the person isn't already under care for a liver-related disease, so the jaundice can be evaluated and the underlying cause treated.
9. Red flag: A bump or brown spot on the eyelid
What it means: Even people who are vigilant about checking their skin may overlook the eyelid as a spot where skin cancer can strike. Most malignant eyelid tumors are basal cell carcinoma. When such a tumor appears as a brown spot, then -- as with any other form of skin cancer -- it's more likely to be malignant melanoma.
More clues: Elderly, fair-skinned people are at highest risk. Look especially at the lower eyelid. The bump may look pearly, with tiny blood vessels. If the bump is in the eyelash area, some eyelashes may be missing.
What to do: Always have any suspicious skin spots or sores checked out by a dermatologist, family physician, or eye doctor. Early detection is critical, before the problem spreads to nearby lymph nodes.
10. Red flag: Eyes that seem to bulge
What it means: The most common cause of protruding eyes is hyperthyroidism (overactivity of the thyroid gland), especially the form known as Graves' disease. (Former first Lady Barbara Bush has it.)
More clues: One way to tell if an eye is bulging is to see whether there's any visible white part between the top of the iris and the upper eyelid, because normally there shouldn't be. (Some people inherit a tendency toward eyes that bulge, so if the appearance seems to run in a family, it probably isn't hyperthyroidism.) The person may not blink often and may seem to be staring at you. Because the condition develops slowly, it's sometimes first noticed in photos or by the occasional visitor rather than by someone who lives with the person every day.
What to do: Mention the symptom to a doctor, especially if it's present in tandem with other signs of Graves' disease, including blurry vision, restlessness, fatigue, increase in appetite, weight loss, tremors, and palpitations. A blood test can measure thyroid levels. Treatment includes medication and surgery.
