Rough Bumps on Arms or Thighs: Keratosis Pilaris or Eczema?
You notice rough bumps on your upper arms while changing for a swim. Are they eczema, irritation or something else? One common possibility is keratosis pilaris, but a clinician is best placed to assess a persistent or changing area.
A common follicle-related condition
MedlinePlus describes keratosis pilaris as a condition in which keratin forms plugs in hair follicles. Small, rough bumps commonly appear on the upper arms and thighs. It is more common in people with very dry skin or atopic dermatitis, so a person may have both.
| Situation | What to consider |
|---|---|
| Keratosis pilaris | Small, rough follicular bumps often appear on the upper arms or thighs. |
| Atopic dermatitis | A chronic inflammatory condition often associated with itching and dry skin; appearance varies. |
| Overlap | Dryness and irritation can coexist, and appearances vary by skin tone. |
| New pain, pus, spreading changes or uncertainty | Ask a healthcare professional for an assessment. |
Avoid a scrubbing contest
Rough skin is not a sign that you need to scrub harder. Harsh friction can make sensitive skin uncomfortable. Ask a clinician about a routine that fits the diagnosis and your skin's tolerance. Cosmetic moisturizer may support ordinary dryness; it does not diagnose a bump or guarantee it will disappear.
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Dr. Arsy Hydration Recovery Moisturizer #003 is a fragrance-free moisturizer for dry, sensitive and eczema-prone skin. Follow the label and your clinician's advice; it does not diagnose or treat a medical condition.
Sources and further reading
Educational information from Dr. Arsy, not individual medical advice. Cited organizations and researchers do not endorse this product.