What Are Those Bumps on My Arms? A Rough Guide to KP

The name Keratosis pilaris sounds serious. The first time I heard it, I assumed it had something to do with skin cancer, because no one uses a term that technical to describe a harmless rash. But that’s essentially what this condition (commonly known as KP) is: a frustrating but benign rash with the nickname “chicken skin” (because of its characteristic bumps). Many who have this common ailment misdiagnose it as acne or something else, so the first step in seeking relief from KP is understanding it. 

Half of Us Have KP and Don’t Know It
Karen Smith, who manages a Web site for sufferers of KP, writes that the condition affects approximately 40 to 50 percent of the adult population and 50 to 80 percent of adolescents, with varying severity. Most people with KP, according to Smith, don’t know they have it, usually because they don’t know about their condition and therefore mistake their symptoms for something else, like acne. That’s a real problem, because the treatments for acne and KP are completely opposite. 

Unsightly, but Harmless
There are two main types and manifestations of KP. Keratosis pilaris alba appears as rough, dry, bumpy skin without irritation. Keratosis pilaris rubra presents as red, inflamed bumps that may look like acne pustules. Other variants of the condition are less common. The former (and more common) presentation resembles goose bumps, which is how it got the “chicken skin” moniker. According to the Mayo Clinic staff, these small, painless, skin-colored bumps appear primarily on the upper arms, legs, or buttocks, but they can also occur on the face and closely resemble acne. The difference is that KP bumps are generally dry, rough patches of skin that may itch. 

KP is frustrating because it affects the skin’s appearance and has no cure, but it doesn’t have any long-term health implications, either. And whereas some skin conditions, like rosacea, worsen over time, especially without treatment, KP may actually resolve itself on its own. For most people, it follows a cycle of improving during the humid summer months and flaring up during the winter.

Moist Skin Is Happy Skin
People who believe their KP is acne and use harsh, drying treatments are only exacerbating the problem. KP skin needs moisture! According to the Mayo Clinic staff, the condition arises when keratin—a hard protein that protects skin from infection—builds up and forms a scaly plug that blocks the openings of hair follicles, causing patches of sandpapery skin. Doctors don’t know exactly why this happens in some people and not others, except that genetics may have something to do with it. 

There may not be a cure for KP, but there are plenty of treatment options to keep your skin looking its best. Because dry skin worsens keratin buildup, the best remedy for KP is to keep skin moist. Here’s how:

  • Cleanse skin gently. You may want to scrub out the keratin plugs or slough off dry skin, but you’ll only aggravate your condition by doing so. Just use a mild cleanser and pat or blot skin dry with a towel afterward. Also, limit bathing to fewer than fifteen minutes in warm water; hot water and long showers strip important oils from your skin.
  • Moisturize. While your skin is still damp from bathing, apply a thick lotion or cream to seal in moisture and prevent keratin buildup.
  • Humidify. Depending on where you live, the air inside your home is probably pretty dry. Use a portable humidifier in your home and office to add moisture. Remember to clean it regularly, as these machines become a trap for bacteria and fungi. 
  • If these home-care measures aren’t doing enough to improve the appearance of your skin, see your dermatologist. He or she will be able to diagnose your problem and offer you further treatment options:
12 readers liked this story.
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04.19.2011
C Maeklos
I have this annoying and awful condition too. I had a doctor who told me it was a form of eczema and then just told me to "get over it and stop being so self-conscious!!. I have tried every lotion under the sun including all that the readers have commented on. My success came from dry brushing which is process you do with a skin brush before you get in the shower. There are some great instructional videos on YouTube and you can purchase the brushes at Whole Foods or health food stores. Now I brush about 3 times a week and it does the trick. Also using no soap products unless absolutely necessary.Some swear by Dr. Bonner's soaps which are all natural. And just one more thing, watch over spray from hair spray as it blocks the pores and check your hair shampoo it can be irritating the condition. Nothing is an absolute cure but this at least makes the my skin on arms nicer and clear looking not to mention boosting my self-confidence. I actually wore short sleeve T-shirts last summer!
09.15.2010
c smith
I have this and it does flare up more in cold weather. I've found using pure shea butter gives the greatest relief. Don't spend a ton of money on some name brand. I bought mine from an online site that sells lotion making supplies. It can even be found on Amazon.com
04.08.2010
marilee
I have had this off and on all my life, and I believe mine is related to Celiac Disease. Celiac disease causes vitamin deficiency, especially the fat-soluble vitamins of A, D, and E, and these all have an effect on the skin. Celiac is a digestive disorder, and so when a doc says it is related to a food allergy, that is close, but not complete information. Try good doses of Vit A and E, and get some sun on that skin for the D. It works for me.
04.08.2010
poptart
Good story. I've seen a dermatologist regarding this and they prescribed Lac Hydrin to ease it but it's really a life long battle as you can't get rid of it. Besides, the stuff was not cheap in the long term and smelled like plastic. It doesn't cure it. The doctor who said this is related to a food allergy is quack or misdiagnosed this. If it's KP, it's genetic. I had it, my mother has it, my brother has it but my husband doesn't. Unfortunately, my daughter is starting to develop it. I've never seen anyone who has it, who doesn't have a family history of it. It also affects those with curly hair more than with straight hair as the follicle is more easily irritated. The key is keeping moisturized to reduce the flare ups. It was always better in the summer where I lived due to the humidity. Now pregnant again, I've been slathering oil all over and have been including these areas and definitely notice a difference in texture. The oil after a shower is definitely a good plan.
04.08.2010
suzyqhess
Talked to our Dr about it as a side note, (My daughter has it) and she said it was evidence of a food allergy. She said to start omitting dairy first (primarily milk) and see what happens. She also said it was harmless, but if we were serious about getting rid of it, we would have to figure out what she is allergic to.
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