Eczema
Keratosis pilaris appears to run in families, and is more prevalent in persons with extremely dry skin or atopic dermatitis.
Ichthyosis
In many cases, plugs form in several hair follicles, resulting in patches of rough, bumpy skin. Keratin is a hard protein that defends skin from dangerous substances and infection. And it builds up in keratosis pilaris, generating patches of rough, bumpy skin.
Hay fever
Keratosis pilaris is a common hereditary condition that is more common in women than in men. It manifests as rough bumps on the skin, mostly on the back and outer sides of the upper arms. But can also affect the cheeks, thighs, and tops of the legs. It is estimated that 40% of adults and 50-80% of adolescents are affected by this skin condition.
It often appears in late childhood or adolescence and typically clears up by the mid-20s, with most cases disappearing by the age of 30.
People with pale skin are more likely to develop keratosis pilaris, and those who have dry skin are more likely to have it. Hormonal changes can cause flare-ups during pregnancy and puberty.
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