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Fast Fact
One of the great wonders of the human body is the ability of damaged cells to be repaired or replaced. Red blood cells, for instance, live for about 120 days. Each day, about 1% of your red blood cells retire to be replaced by a fresh generation. The lens of the eye is a notable exception. The cells of the lens of the eye are never replaced; the proteins of the lens are never replenished. The lens cannot repair itself; damage accumulates over a lifetime.
Cataracts are the result of gradually accumulating damage to the proteins of the lens. The most important source of this damage is exposure to ultraviolet (UV) radiation, especially while one is young.
Behind the lens lies the retina, the thin lining of the back of the eye. The retina is the eye's miracle. This patch of tissue, about the size and thickness of a postage stamp, is able to dissolve and create a new image every tenth of a second.
Today in the United States, retinal diseases are the leading cause of blindness. Macular degeneration, the accumulation of damage in the retina, is the leading cause of blindness from retinal disease. Slowly, over the years, the macula is irreversibly damaged by exposure to UV radiation. About one third of adults over age 65 experience this steady decline of central vision, not correctable by glasses.
Excessive exposure to sunlight during early childhood is harmful to the eyes. Sunlight contains harmful UV radiation.
The risk for retinal damage from the sun's rays is greatest in children less than 10 years old, although the consequences usually do not become apparent until well after they are adults.
All children should be taught to wear sunglasses, especially between 10 AM and 2 PM, when ultraviolet exposure is the most dangerous. This is true even for children with darker eye colors, even though their darker pigments afford partial protection. Of course, children with light-colored eyes need sunglasses all the more.
Ultraviolet exposure is at its peak when children are at high altitudes, snow-covered landscapes, bright sandy beaches, or near reflective bodies of water.
All sunglasses are not the same. Effective sunglasses should block both UVA and UVB radiation. The sunglasses must be measured to block 99% to 100% of UVA or UV400 (400 nm is the wavelength of UVA radiation). Thankfully, all sunglasses block UVB radiation.
Large lenses that fit close to the eyes are best. Those that block visible blue light are even safer.
Expensive brand names and polarizing lenses are no guarantee.
Ordinary sunglasses make the situation WORSE! The dark lenses cause the pupils to dilate, allowing more of the dangerous UVA radiation to damage the lens and the retina.
My little girl is severely disabled and it is VERY difficult to get her hair washed. She requires 24 hour care by a LVN or myself. She is orally/nasally suctioned every 1-5 minutes for very large amount of continuous secretions. She can't swallow, gag, cough, see, hear, or move on her own. Because of her size, a dislocated hip from birth, and a recent knee fracture that never healed properly, her legs have to be kept completely supported. She gets daily bed baths, but giving her a tub bath is almost impossible. So, I would like to know how to go about clearing up a problem with her scalp. Because I am not able to wash her hair often, it has developed patches of an oily, yellowish substance. (This also shows up on her legs, forehead, and eyebrows.) This won't comb out. It isn't dry. Oil seem to make it stickier. She has very sensitive skin, so many things break her out, cause her tongue to swell and her body to become one big red blotch. I've heard of using Sebulex, but I'm afraid of what it might do. Any suggestions? Thanks so much.
Carrie C. - Northern, California
Dear Carrie, Thank you for writing. It is clear that you have little time for yourself. I am so impressed that you would take what little time you do have to use the Internet in order to find the answer to your question. I feel privileged that your search led to Dr. Greene's HouseCalls and that you would pose your question to me.
By your description, it sounds like your daughter most likely has seborrhea, or seborrheic dermatitis. Sometimes these scales are only of cosmetic concern, however they can be very itchy and uncomfortable, and can lead to infection. By watching your daughter you will be able to tell if they are bothersome to her. If they are not, you may want to allow them to stay, if removing them is too much of a hardship for you.
If you do determine that you would like to remove the scales, the oil that you spoke of using can be helpful. If you are going to use oil, I would recommend warm mineral oil, and leaving it on for a few hours to soften the scales. Tea tree oil (5%) may be helpful and appears to be well tolerated. Then, real scrubbing is often necessary to remove the thick adherent scales on the scalp.
You may need to use a more aggressive approach if the scales have become thick and crusty. A shampoo containing sulfur and salicylic acid generally works very well. Examples of this would be the Sebulex you mentioned or MG217 Medicated Tar-Free Shampoo, which are available over the counter. Just be sure to avoid her eyes as these shampoos are safe, but can sting the eyes. If this doesn't work, a stronger treatment is indicated. The next line of attack is a phenol-saline solution, such as P&S Liquid, which is also available over the counter. This should be massaged into the scalp at night and then shampooed out the following morning.
Whichever of these agents you use, it is important for it to be left on for a sufficient amount of time to loosen the scales properly. The most common reasons for failure of any of these treatments are not allowing the agent to stay on for the recommended time, or inadequate scrubbing.
Using hydrocortisone cream, in addition to one or more of the above treatments, adds help to bring the problem under control.
Due to the sensitive nature of your daughter's skin, I would try applying any treatment you use on just a little patch of skin before trying it on her whole scalp. Only proceed if she tolerates the patch well.
Even after you find one that works well for her, you may need to switch it after a few weeks. Many parents find that treatments seem to lose their effectiveness. Rotating your approach every few weeks will usually solve that problem.
If your daughter’s skin does not improve, I recommend consultation with a dermatologist (skin specialist).
The addition of a new baby throws the family rhythm into a tailspin! Moms, dads, and siblings often feel their needs aren't being met. A new baby requires most of everyone's time and attention. Click here for Dr. Greene’s tips for scheduling breaks from the hubbub.
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