What Is KP?
KP is a very common, bumpy skin condition usually seen on the sides of the face, the backs of the arms, and the tops of the legs. Sometimes the rash is more noticeable by touch than by sight and may be itchy. Young people, including children, have this most often.
What Causes It?
KP is a genetic trait in which the skin cells stick to each other and to the fine hairs in these areas, as opposed to falling off as the new ones underneath replace them. Thus, the bump centers around the hair follicles and can look like a pus bump or acne.
KP is seen more frequently in people with sensitive skin and a history of eczema, although it can occur alone. Although it usually improves with age, there can be a worsening during puberty, suggesting that hormones may play a role in its development.
Treatment
KP is very difficult to treat because the creams that are most effective at removing the mounds of sticky skin cells also strip the normal skin nearby, causing irritation. Gritty washes and loofah sponges can paradoxically make KP worse, because the mechanical abrasion stimulates increased skin cell production.
KP is a condition we can help you control, but not one that we cure. Often, treatment results in modest improvement, but one that can be important for patients. We recommend a graduated approach to KP, starting with the least irritating option and increasing as necessary to get the desired effect. All approaches take months to see improvement, so don’t get discouraged.
Available treatments include:
Prescription
- Lac-Hydrin®: 12% ammonium lactate
- Salex® lotion or cream: 6% salicylic acid
- Urea: 20%–40% urea
- Retin-A®: 0.025%–0.1%
- Topical steroids: just used occasionally to take care of the redness
Over-the-counter
- AmLactin® XL: 12% ammonium lactate
- U-Lactin®
Have questions about KP, or want me to take a look? You can book online or call the office at 423-528-8833. This page is for general education, not a substitute for a personal exam.