Keratosis Pilaris – Symptoms and Causes

ByJanis Updated

Overview

Keratosis pilaris is a harmless skin condition that creates dry patches and small bumps on the skin. These bumps commonly appear on the upper arms, thighs, cheeks, or buttocks. They typically don’t cause pain or itching.

This condition represents a normal skin variation that many people experience. While there’s no cure or prevention method, several treatment options can improve the skin’s appearance, including moisturizers and prescription creams.

Most people find that keratosis pilaris resolves on its own by around age 30. Until then, simple skin care routines can help manage its appearance.

Signs and Symptoms

Keratosis pilaris can affect people of all ages but shows up more often in younger children. This skin condition has several key signs:

  • Small, painless bumps appearing on the upper arms, thighs, cheeks, or buttocks.
  • Rough, dry skin in areas where bumps appear.
  • Seasonal flare-ups when humidity drops and skin becomes drier.
  • Texture like sandpaper; that may resemble goose bumps.

When Medical Help Is Needed

Most people don’t need treatment for keratosis pilaris. If you’re concerned about your skin or your child’s skin, it’s best to consult your healthcare provider.

A dermatologist (skin doctor) can also provide expert advice about this common skin issue.

Causes

Keratosis pilaris happens when keratin builds up in the skin. Keratin is a tough protein that helps protect your skin from harm and infection.

When too much keratin collects, it blocks hair follicles and creates rough, bumpy patches on the skin.

Scientists aren’t entirely sure why this keratin buildup occurs in some people. The condition may be linked to:

  • Genetic factors
  • Other skin conditions, like atopic dermatitis
  • Dry skin (which typically makes symptoms worse)

Many experts believe keratosis pilaris has a hereditary component, as it often appears in multiple family members. The condition tends to worsen during dry winter months and improve when humidity is higher.

Risk Factors

Keratosis pilaris often appears in families, suggesting a genetic link. Many people with this skin condition share it with close relatives.

Health Writer

Janis's areas of expertise include nutrition, exercise, stress management, and mental health. She is passionate about educating and empowering people to take control of their health and make positive changes that can last a lifetime. Janis believes that small, sustainable changes are the key to long-term success, and she works with her clients to develop personalized plans that fit their individual needs and lifestyles.