Q My mother also had severe bumpy arms - is keratosis pilaris hereditary? Is it worse if I also have atopic dermatitis?
A Keratosis pilaris has a strong autosomal dominant hereditary tendency, so if a parent has the same skin condition, a child is likely to develop it too. It often appears together with atopic dermatitis, and because the skin barrier function is weaker in that case, it tends to be more pronounced.
Detailed Answer
Keratosis pilaris is far more likely to develop in people who have a family member with the same skin condition. Because it tends to be inherited in an autosomal dominant manner, even if only one parent is affected, there is a high chance it will pass to the child. It also commonly occurs alongside atopic dermatitis; in atopic skin, the lack of skin barrier proteins makes it easier for moisture to escape and keratin metabolism becomes more disordered. This is also why the condition becomes more noticeable in winter and dry environments.
Korean Medicine Clinic Perspective
In Korean medicine, a hereditary makeup and an atopic foundation are read as a constitution that is innately prone to a deficiency of blood and fluids (jin-aek). In the case of spleen-deficiency with dampness (biheo-seup), the digestive system fails to properly absorb and distribute nutrients, so the fluids reaching the skin diminish; in the case of blood-deficiency wind-dryness (hyeolheo-pungjo), the skin's extremities become dry and keratin overproduction occurs easily. Identifying this constitutional background and regulating it in the direction of nourishing blood and moistening dryness (bohyeol-yunjo) is Dongjedang's approach.
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