Keratosis Pilaris: Symptoms, Causes & Treatment Guide
Updated: 2 days ago
Medically reviewed by Dr. Baraa Alnahhal, MD · Last reviewed: September 2026
Source currency note: This article reflects clinical guidance last published October 23, 2024.
TL;DR
Keratosis pilaris (pronounced ker-uh-TOE-sis pih-LAIR-is) is a harmless skin condition that causes dry, rough patches and tiny bumps, usually on the upper arms, thighs, cheeks or buttocks. The bumps typically don't hurt or itch. It happens when keratin — the hard protein that protects skin — forms a plug that blocks the opening of hair follicles. There is no cure and no prevention, but moisturizers and prescription creams can improve how the skin looks, and the condition usually disappears by age 30.
Quick Answer
What is keratosis pilaris? A harmless skin condition causing dry, rough patches and tiny bumps, often on the upper arms, thighs, cheeks or buttocks.
Does it hurt or itch? Usually not — the bumps are painless and don't itch.
What causes it? A buildup of keratin forms a scaly plug that blocks hair follicle openings.
Who gets it? It can occur at any age but is more common in young children, and it tends to run in families.
Can it be cured? No — it can't be cured or prevented, but it usually fades by age 30.
How is it treated? With moisturizers, self-care habits, and, if needed, prescription creams containing exfoliating acids or vitamin A-derived retinoids.
Is it dangerous? No — it's considered a common variant of skin, and treatment usually isn't needed.
What Is Keratosis Pilaris?
Keratosis pilaris is an inflammation-free, harmless skin condition that causes dry, rough patches and tiny bumps on the skin. It most often appears on the upper arms, thighs, cheeks or buttocks. The bumps usually don't hurt or itch.
Clinically, keratosis pilaris is often considered a common variant of skin rather than a disease. That framing matters: this is a condition people live with, not fight against.
The outlook is reassuring on two fronts. The condition usually disappears by age 30, and it can be treated with moisturizers and prescription creams to help improve how the skin looks — even though it can't be cured or prevented.
What Does Keratosis Pilaris Look and Feel Like?
Keratosis pilaris can occur at any age, but it is more common in young children. The appearance is distinctive enough that many people recognize it instantly — it is sometimes nicknamed "chicken skin" because of its resemblance to plucked poultry skin or goose flesh.
What You Notice | What It Means |
Painless tiny bumps on the upper arms, thighs, cheeks or buttocks | The classic sign — clusters of small, skin-colored or slightly red bumps |
Dry, rough skin in the areas with bumps | The surrounding skin feels dry and coarse |
Bumps resembling goose flesh | A sandpaper-like texture that resembles goose bumps |
Symptoms worsening with seasonal changes | Low humidity and dry skin tend to make it more visible |
The seasonal pattern is worth understanding. When the air turns dry — typically in colder months — the skin dries out too, and keratosis pilaris tends to become more noticeable. Many people find their skin looks better in warmer, more humid seasons.
What Causes Keratosis Pilaris?
Keratosis pilaris develops when keratin forms a scaly plug that blocks the opening of a hair follicle. Keratin is a hard protein that protects skin from harmful substances and infection. When it builds up, it blocks many hair follicle openings at once, causing patches of rough, bumpy skin.
It is not clear why keratin builds up in people with keratosis pilaris. However, the condition might appear alongside a genetic disease or skin conditions such as atopic dermatitis (a type of eczema). Dry skin also tends to make keratosis pilaris worse.
Cause Factor | What the Evidence Shows |
Keratin buildup | Forms a scaly plug that blocks hair follicle openings |
Unknown mechanism | It's not clear why keratin builds up in affected people |
Genetic disease | The condition might occur alongside certain genetic diseases |
Atopic dermatitis | A known skin condition linked with keratosis pilaris |
Dry skin | Tends to worsen the condition |
Risk Factors for Keratosis Pilaris
Keratosis pilaris is very common, and two factors stand out. It tends to run in families, pointing to a hereditary component. It is also more common in young children than in older age groups, which fits its typical pattern of fading over time.
Risk Factor | Why It Matters |
Family history | The condition tends to run in families |
Young age | More common in young children than adults |
Dry skin and low humidity | Seasonal dryness makes the condition more visible |
Atopic dermatitis (eczema) | Linked skin condition that can co-occur |
When Should You See a Doctor?
Treatment for keratosis pilaris usually isn't needed. It is harmless, painless, and typically fades on its own over time.
However, if you're concerned about your or your child's skin, it's reasonable to consult your health care provider or a dermatologist — a specialist in skin conditions. A dermatologist can confirm the diagnosis, rule out other causes of the bumps, and recommend products matched to your skin.
How Is Keratosis Pilaris Diagnosed?
The diagnosis is notably simple. Your health care provider will likely be able to diagnose keratosis pilaris just by looking at the affected skin. No testing is needed.
Diagnostic Step | What Happens |
Visual exam | The provider looks at the affected skin |
Diagnosis | Based on appearance alone — no lab work, biopsy, or testing required |
The pattern of painless tiny bumps in characteristic locations — upper arms, thighs, cheeks, buttocks — is typically enough for an experienced provider to make the call.
How Is Keratosis Pilaris Treated?
Keratosis pilaris usually clears up on its own with time. In the meantime, you might use one of the many products available to help improve how the skin looks. If moisturizing and other self-care measures don't help, your health care provider may prescribe medicated creams.
Creams to remove dead skin cells
Creams containing alpha hydroxy acid, lactic acid, salicylic acid or urea help loosen and remove dead skin cells. They also moisturize and soften dry skin. These creams are called topical exfoliants.
Depending on their strengths, they are available with a prescription or as nonprescription products. Your health care provider can advise you on the best option and how often to apply.
One caution: the acids in these creams may cause inflamed skin or stinging, so they aren't recommended for young children.
Creams to prevent plugged follicles
Creams derived from vitamin A are called topical retinoids. They work by promoting cell turnover and preventing plugged hair follicles.
Retinoid Type | Brand Examples |
Tretinoin | Altreno, Avita, Renova, Retin-A, others |
Tazarotene | Arazlo, Avage, Tazorac, others |
These products can irritate and dry the skin. If you're pregnant or nursing, your health care provider may suggest delaying topical retinoid therapy or choosing another treatment.
What to expect from treatment
Using medicated cream regularly may improve how the skin looks. But if you stop, the condition returns. And even with treatment, keratosis pilaris might last for years — consistent, gentle care is a long-game approach, not a quick fix.
Lifestyle and Home Remedies
Self-help measures won't prevent keratosis pilaris or make it go away. But they may improve how the affected skin looks.
One important rule before trying anything new: when using a product new to you, test it on one area of affected skin first, such as an arm. If it seems to work and doesn't cause a reaction, use it for your keratosis pilaris.
Self-Care Step | The Rule |
Bath habits | Use warm, not hot, water; limit bath or shower time to about 10 minutes or less — hot water and long soaks remove oils from the skin |
Be gentle | Avoid harsh, drying soaps; gently remove dead skin with a washcloth or loofah; never scrub vigorously or pick at plugs, which irritates the skin and worsens the condition |
After washing | Gently pat or blot skin with a towel so some moisture remains — don't rub dry |
Medicated creams | Apply a nonprescription cream with urea, lactic acid, alpha hydroxy acid or salicylic acid to loosen dead skin cells, and put it on before moisturizer |
Moisturize | While skin is still moist, apply a moisturizer containing lanolin, petroleum jelly or glycerin; thicker moisturizers work best; reapply several times a day |
Humidify | Use a portable home humidifier or one attached to your furnace — low humidity dries out the skin |
Clothing | Avoid friction from tight clothes on affected areas |
Moisturizer ingredient matters. Products containing lanolin, petroleum jelly or glycerin soothe dry skin and help trap moisture. Thicker moisturizers work best — examples include Eucerin and Cetaphil.
Coping and Support
For many people, keratosis pilaris is less a medical problem and more a cosmetic frustration — especially when bumps appear on visible areas like the arms and cheeks. Knowing that it is harmless, common, and typically fades by age 30 can ease the worry.
If the appearance bothers you or your child, consistent self-care — gentle washing, short warm showers, daily thick moisturizer, and a humidifier in dry months — can meaningfully improve how the skin looks. A dermatologist can add prescription options when over-the-counter care isn't enough.
Preparing for Your Appointment
You're likely to start by seeing your health care provider, who may refer you to a dermatologist. You may want to prepare a list of questions to ask.
Questions to Ask Your Provider | What to Expect Them to Ask You |
What is likely causing the symptoms? | When did the symptoms begin? |
What are other possible causes? | Have the symptoms been steady or spotty? |
Is this condition short lived or long lasting? | What seems to improve the symptoms? |
What is the best course of action? | What seems to worsen the symptoms? |
What are the alternatives to the primary approach? | Do other family members have similar skin changes? |
Is there a generic alternative to the medicine you're prescribing? | Do you or your child have a history of asthma, hay fever or other allergies? Do you or your child have a history of eczema? |
Conclusion
Keratosis pilaris is a harmless, common skin condition — a rough, bumpy texture caused by keratin plugs blocking hair follicle openings, not by infection or poor hygiene. It can't be cured or prevented, but it usually fades on its own by age 30, and gentle self-care plus prescription creams can improve how it looks in the meantime.
Talk to a dermatologist if the bumps bother you. They can confirm the diagnosis in a single visual check and help you choose between over-the-counter exfoliants, thick moisturizers, and prescription retinoids — the right combination depends on your skin and your goals.
Frequently Asked Questions
Is keratosis pilaris dangerous?
No. It is a harmless condition often considered a common variant of skin. The bumps usually don't hurt or itch, and no testing is needed to diagnose it.
Can keratosis pilaris be cured?
No — it can't be cured or prevented. However, moisturizers and prescription creams can improve how the skin looks, and the condition usually disappears by age 30.
Why do I get keratosis pilaris?
It develops when keratin — the hard protein that protects skin — forms a scaly plug that blocks the opening of hair follicles. It's not clear why keratin builds up, but the condition tends to run in families and may occur alongside atopic dermatitis.
What makes keratosis pilaris worse?
Dry skin makes it worse, especially during seasonal changes with low humidity. Hot water, long showers, harsh soaps, vigorous scrubbing, and friction from tight clothes can also irritate the skin.
What is the best treatment for keratosis pilaris?
For most people, gentle self-care is enough: warm (not hot) short showers, gentle cleansing, medicated creams with urea, lactic acid, alpha hydroxy acid or salicylic acid, and a thick moisturizer with lanolin, petroleum jelly or glycerin. If those don't help, a provider may prescribe topical exfoliants or vitamin A-derived retinoids such as tretinoin or tazarotene.
Does keratosis pilaris go away on its own?
Usually, yes — it typically clears up with time and disappears by age 30. In the meantime, treatment improves how the skin looks, though bumps can return if medicated creams are stopped.
Should I use retinoid cream for keratosis pilaris?
Topical retinoids like tretinoin and tazarotene can help by promoting cell turnover and preventing plugged follicles, but they can irritate and dry the skin. If you're pregnant or nursing, your provider may suggest delaying retinoid therapy or choosing another option.
Can my child have keratosis pilaris?
Yes — it can occur at any age and is more common in young children. It's harmless and usually fades over time. Note that acidic exfoliant creams may cause stinging and aren't recommended for young children.
Related Reading
If you're dealing with itchy skin bumps of a different kind, see our guide to Chronic Hives: Symptoms, Causes & Treatment
References
Keratosis pilaris — Symptoms and causes (Mayo Clinic, published October 23, 2024)
Keratosis pilaris — Diagnosis and treatment (Mayo Clinic, published October 23, 2024)
Rinnit.com provides general health information for educational purposes. This content does not replace professional medical advice — always consult a qualified healthcare provider for diagnosis and treatment.
Health information, not medical advice. This article is for general education and is not a substitute for professional diagnosis or treatment. Always consult a qualified healthcare provider about your own health, and seek emergency care for urgent symptoms.
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